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Read this book first.
This rulebook tells you
everything you need to know about the Missing
Expedition expansion for Lost Ruins of Arnak.
The other book is a campaign book which is
intended to be read chapter-by-chapter as you
play through the story.

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Using This Expansion
New Research TracksNew Sites
The 5 new site tiles give you the option to use the
campaign’s encounter cards in the standard game.
Do not use these new site tiles in the campaign.
13 artifacts 21 items
3 guardians 4 assistants
Encounter Cards
from the Campaign
1 level
site 4 level sites
8 idols
2 waterfall
tiles
56 encounter cards
This expansion is designed to be used in 2 ways:
Play a Standard Game
Mix the new cards and tiles into your base game and play a standard game for 1 to 4 players.
This expansion’s components are marked with this symbol. Even if you mix them into a standard
game, you will still be able to play the campaign later.
Play the Campaign
Keep this expansion’s components separate from the standard decks, and play a six-chapter campaign as a solo player or two-player co-op.
Expand the Standard Game
The new research board has two new research tracks. They are used in the campaign, but you can also use them in a standard game.
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Expedition Leaders
This expansion includes two new leaders with unique abilities.
These can be combined with the leaders from the Expedition Leaders expansion. If you don’t have that
expansion and you want to try leaders in a standard three- or four-player game, see the rules for two
more simple leaders on page 10.
The campaign is designed to be played with leaders. You can use any leaders from this expansion or the
Expedition Leaders expansion.
Mechanic
monkey assistant
8 gold widgets
Journalist
4 newspaper tiles
15 article tokens
2 random-role tokens
Campaign Only
2 pigeons
12 chapter overview cards
4 archaeologist
figures in red color
pad of
campaign sheets
fog / tide tile
research
rewards
overlay
assemble the board
as shown
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Expedition leaders were introduced in the
previous expansion (Expedition Leaders) . If
you already know how to use them, you can
skip ahead to the individual descriptions
of the Mechanic and the Journalist.
If you don’t have the Expedition Leaders
expansion, page 10 shows you how to
make 2  simple leaders that will allow you
to compete with the Mechanic and the
Journalist in 3- or 4-player games. You can
also use the simple leaders in the 2-player
or solo campaign when you want to keep
things simpler.
Expedition Leaders
About the Expedition Leaders expansion
Expedition Leaders is another expansion for Lost Ruins of
Arnak. It includes:
◊ 6 leaders giving each player a unique ability
◊ 2 new research tracks
◊ 30 new items & artifacts
◊ new sites, guardians, assistants and more!
You can play The Missing Expedition, either the campaign
or the standard game, with or without the Expedition
Leaders expansion.
Find out more at www.cge.as/expedition-leaders
JOURNALIST – He has come to
Arnak to get the story! His articles
give him a unique way to benefit
from discoveries.
MECHANIC – A skilled engineer
with a passion for gears. She’s building a huge machine with help from a furry friend.
Use these tokens if you want to choose a leader
randomly.
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Player Setup
Each leader has their own board and cards that
replace the player board and basic cards from the
base game. Take the board and the starting cards
that belong to your leader. You will also need
2 Fear cards, as usual.
Use the archaeologist figures and research tokens
from the base game.
Each leader has special setup rules with leader-
specific components:
JOURNALIST:
MECHANIC:
Once your boards are set up, play order and
starting resources are determined normally. Each
expedition leader is explained in detail on the
following pages.
Blue Idol Slot Effects
Expedition leaders have
unique idol slot effects in addition to the five that were also available in the base game.
Your unique idol slot effect can
be used only when you place the idol in a blue slot.
When playing with the expedition leaders, you
are not required to use idol slots in order. So you can use a  blue slot even before the normal slots are filled.
The five usual idol slot effects
can be used with any of your idol slots, even the blue ones.
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The Journalist
Preliminary Findings
Journalists don’t mind writing
stories before all the facts are
known. When researching, your
notebook is allowed to go one row higher than
your magnifying glass (but no farther).
As a reminder, start with your notebook stacked
on top of your magnifying glass.
Team Finds Lost Temple Lost Temple Found!
Cries of joy rang through Arnak’s jungle today when the Arnak expedition 
discovered a glyph-bedecked arch gateway leading to a long-abandoned temple.
Starting Cards
Reporting
Reporting has one of the three effects depicted
in the table. Your options depend on how many articles you have written (whether or not they are published yet).
◊ If you have written 0 or 1, gain .
◊ If you have written 2 or more, you may choose either the
or the .
◊ If you have written 5 or more, gain .
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Writing Articles
When the game starts, your
articles are at sites or in notches
above your board. They are not available for use.
You must write them first.
Writing a site’s article is a free action. Its cost is
one of the travel values shown at the site. (For
example, you can pay
or if the site’s cost
is .) You must have an archaeologist at the
site to write its article.
Reminder: Extra travel values are not lost until
the end of your turn. If you pay to go to a
site that costs only , you can use the leftover
to write the site’s article.
The feature articles, in notches above your board,
can be written only by using Investigation .
Once an article is written, keep it on your supply
crate until you decide to publish it.
Publishing Articles
Articles you have written can be spent on the
actions depicted on your newspaper tiles. When
you decide to use the action, place the article on it.
That action and that article cannot be used again.
As usual, if it’s not marked as a free action, you
perform it as the main action of your turn.
On each newspaper, you must fill the top row
before you can use the middle row, and you must
fill the middle row before you can choose the
bottom action. Currently available actions are
marked as
1 in the example above. Note that
it’s okay to publish multiple rows on one tile while ignoring the other.
However, there is a reward for publishing all
4 articles in the top row – it makes that row’s blue
idol slot available
2. Similarly, the second row’s
idol slot is available only if all articles in that row have been published.
Article Setup
Place 1 article token below each or
site, as shown. Place 2 or 3 article tokens in the notches in your board. (Use 3 only in a two-player game.) These are feature
articles you can write using your Investigation card.
Newspaper Setup
Randomly select 2 of the 4  newspaper tiles and insert them with a random side up. Return the other 2 to the box.
1 1
1
2
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The Mechanic
Hand me the three-quarters. … No, that ’s a screwdriver. I want a wrench. … No, that ’s
seven-eighths. I want three-quarters. Three-quarters. … Yes! Yes! Good monkey!
Setup
Tinkering
Tinkering has one of the three effects depicted
in the table. Your options depend on how
many gold widgets you have in your machine.
◊ If you have 1, you gain .
◊ If you have 2, you may choose the option above, or the
.
◊ If you have 3 or more, you may choose ,
or any one of the options above.
Starting
Cards
You will get Rusty the monkey at the beginning of round III. Place the monkey assistant on
space III of the card row to remind you.
Shuffle the 8 gold widgets face down and divide them into 4 pairs.
Keep 1 pair face down beside your board. This pair is for your Teamwork
card. Place the other 3 face down on spaces I, III, and V of the card row.
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The Machine
Your machine is a big wheel with 4 silver widgets and spaces for
4 gold widgets. It starts the game with the and effects on top,
as shown above. As a reminder, there is an arrow in the center of the
wheel; it points up.
This effect – found on your cards, on your monkey assistant, and in your blue idol effect –
means you rotate the wheel 90 degrees clockwise, then choose 1 silver widget effect from
the 2 that end up on the right.
This effect also rotates the wheel 90 degrees clockwise. Then check the gold widget space
that ends up on the right.
If the gold widget space is empty, choose 1 silver widget effect, just as you do with
the silver-gear effect.
If there is a gold widget in the space that ends up on the right, choose the effect of
either that gold widget, or both adjacent silver widgets in either order.
Rusty
You gain this assistant at the beginning of round III. You can also gain assistants the usual way, which means you may end up with 3.
Rusty can be used and refreshed just like any other assistant, however he cannot be
replaced, exchanged, or discarded by any effect. He always belongs to the Mechanic.
Adding a Gold Widget
After drawing cards at the beginnings of rounds I, III, and V, reveal that round’s pair of gold
widgets, choose one, and place it in any empty space in your machine. Return the other widget to the box.
Your Teamwork card allows you to add 1 widget from the extra pair, beside your board.
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New Sites
Prospector and Traveler
These sites can be shuffled into the regular stacks. They let you draw encounter cards. Remove these
sites from the stacks when you play the campaign; it uses the encounter cards differently.
Each new site has an effect that tells
you to draw and resolve the top
encounter card from a particular deck.
Note that the encounter cards may
have some minor spoilers for the
campaign.
Here are 2 simple leaders you can make using only components from the base game. Use the board
and pieces from the base game and replace your starting cards with those shown here. You won't have
blue idol slots or special abilities, but these cards will give you the advantages you need to play the
campaign or to play a 3- or 4-player game against the Mechanic and Journalist.
Encounter Cards
You can leave the decks of encounter cards in the box until they are
needed. If a site using an encounter deck is revealed, take the deck
from the box, shuffle it, and place it beside the board near the site.
When you resolve an encounter card, you pick one of the two options:
◊ If you choose the effect on the left, resolve it immediately. Then discard the card.
◊ If you choose the effect on the right, you keep the card by your board. If the effect has the
symbol, you can use it just like any free action (even immediately). If it is not a free action, you can
use it only as the main action of your turn. Either way, discard the card after use.
These symbols are for the campaign.
They have no effect in a standard game.
Chapter Six cards are
used only in the campaign.
Hat Watch
Gold Pan
Sturdy
Boots
Funding Funding Exploration Exploration
2× Fear 2× Fear
TravelerProspector
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Waterfall Temple
Flowing, splashing, always shifting,
the water blocks our way.
To play with the Waterfall Temple, simply
place it on top of the research track on either
side of the original board.
New Draw Effect
This is just like a effect, except
you draw the card from the bottom of your deck.
The Shortcut
Your magnifying glass can take this shortcut and move directly to the temple. To pay the idol part of the cost, give up an unused idol.
Hidden Site
An archeological wonder lies hidden behind the waterfall. During setup, deal random level
sites face down to the site space, one
site per player.
During play, only your magnifying glass may
go to the site space. Your notebook must move
through the spaces on the right. It can move
to these spaces even while your magnifying
glass is still on the site (and the Journalist’s
notebook can move to the row above the site).
When your magnifying glass reaches the site
space, look through the site tiles, select one,
activate it, and place it on the bottom of the
regular site stack.
For solo rules, the rival expedition discards
the top site when they reach this space.
The Cataracts
During setup, place waterfall
tiles to cover these two costs. Covered costs
do not apply. Each time the space above is
researched, slide the tile to cover the old cost
and reveal the cost that applies next time.
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Tree Temple
The tree bears the marks of rituals
from long ago. How could any
living thing be so ancient?
Setup
◊ To play with the Tree Temple, simply place
it on top of the research track on either
side of the original board. We recommend
the Snake Temple side because its sites
have more interesting travel costs.
◊ Before dealing idols to sites,
make two small face-down stacks of randomly chosen idols, with one idol per player.
Place the stacks on the marked spaces, face down. No one will know what is in a stack until they reach that space with their notebook.
Idol Chambers
The Tree Temple gives you two
chances to perform an ancient ritual. When you reach an idol
chamber with your magnifying glass, you may place one of your unused idols in one of the slots in that space to gain the reward depicted in the slot.
Players who arrive later will not be able to use
slots occupied by idols played earlier. Idols in
slots on your board cannot be moved to the
idol chamber. If you have no idol to offer, you
gain no benefit from the idol chamber and the
opportunity to use it is lost.
When you reach an idol chamber
with your notebook, look through the idols in the stack, select one, and return the others face down.
Gain the chosen idol’s reward immediately, as well as the idol itself.
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Other Mysteries
You can find interesting items of Arnak lore even
before you reach a temple.
If you have a research token in
this row, your Research action can be used to gain a 2-point temple tile instead of advancing a token. Pay the usual cost.
If you have a research token in
this row, you can research 2-point or 6-point temple tiles.
This door will not open for just
anyone. As part of this cost,
you must exile an artifact from your hand or play area.
When your magnifying glass reaches
this row, you may refresh one of your face-down guardians. Flip it face up to make its boon usable again.
When your magnifying glass reaches
this row, you may immediately use the effect of any face-up idol on an undiscovered site. If there are no face- up idols, then this has no effect.
When you place an idol here, you
may buy an item with a discount of
. Then you may draw a card
from the bottom of your deck. Note that this means you may immediately draw the card you just bought.
New Idols
This expansion includes several new idols. Just mix them in with those from the base game, whether you are playing the campaign or not. In particular, you will need these additional idols to set up the Tree Temple.
To resolve this idol’s effect, take one of the 2-point temple tiles from any of the
three stacks in the temple. You do not pay any research cost. If all the stacks are empty, this idol has no effect.
Solo Game
In the solo game, the rival always scores 3 points for the first idol of a certain type and 2 points for additional idols of the same type. This is true even for idols that are not printed on the rival’s board.
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Notes on Specific Cards
Prof. Kutil’s Diary
For example, if your notebook token
has advanced 3 rows, you get to
choose 2 of the 3 options (but you
can’t choose the same one twice). If
you choose to draw a card, you are
allowed to look at it before making
your second choice. On the Waterfall Temple, your
notebook’s path bypassing the hidden site is two
rows (even though the hidden site is only one row
for your magnifying glass).
Dark Statuette
Set your hand aside and look
through your deck. Choose up to 2 cards that are not Fear cards and
add them to your set-aside hand. Of the cards that are left, put each Fear
card back into your deck and the
rest into your play area. You cannot play free actions until you have finished dealing with the cards you are looking at.
Jeweler’s Loupe, Stone Feather
It might be possible to place more
than one resource before you next move the research token. In that case, you will gain them all at once.
For Jeweler’s Loupe, don’t forget that
researching a temple tile counts as
researching with your magnifying
glass.
Miner’s Helmet
For example, if the site tile says
, you just gain the and
– you take no Fear cards. Miner’s
Helmet only applies to site tiles; it
can’t prevent from guardians or
encounter cards.
Hidden Fear This card from the Expedition
Leaders expansion is considered a
card for effects like those found
on Cursed Coin and Dark Statuette.
look at: This means the same thing that “draw up to” meant in the original game.
spent / unspent boon: If your guardian is face down, its boon is spent. This is the same as saying the boon “has been used.” If your guardian is face up, its boon is unspent. This is the same as “unused” or “usable.”
opponent: In a standard game, a site occupied by an opponent means a site occupied by another
player. In a two-player cooperative game, only the rival is an opponent.
another player: In a two-player cooperative game, either your rival or your fellow player can be
considered “another player.”
gain
: When you gain an artifact from the card row, this is the same as buying it without
paying the cost. However, if the artifact is gained to your hand or to your deck, you do not
perform its effect. ignoring any
: Yes, this encounter card effect lets you relocate to an already occupied site!
rightmost  site: The site.
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© Czech Games Edition
June 2023
www.CzechGames.com
Michal Štach
Michaela Štachová
Adam Španěl
Stanislav Kubeš
Tomáš Uhlíř
Vít Vodička
Jakub Uhlíř
Radek Boxan
Míša Zaoralová
Ondřej Hrdina
Milan Vavroň
Jiří Kůs
Jakub Politzer
Štěpán Drašťák
Roman Bednář
Radim “Finder” Pech
Dávid Jablonovský
Michael Murphy
Vít Vodička
Jason Holt
Jan Zvoníček
Petr Murmak
Development Team:

Graphic Design:
Art:

Trailer & 3D Assets
Art Consultation:
Community Manager:
Production:
Rulebook Writer:
Project Management:
Project Supervision:
There’s much left to discover!
Follow the link below for explanation
videos, designer diaries, art
progress, and more.
www.cge.as/explore-arnak
Keep Exploring
A game by Mín & Elwen
Story by Mín and Jason A. Holt
BIG THANK YOU TO:
Our core team:
◊ Adam Španěl for creating the CGO platform for digital testing and
development of board games and countless iterations of the game there,
communicating with testers, testing the game, and providing great
feedback. Sometimes I think you own the Time-Turner!
◊ Tomáš “Uhlík” Uhlíř, for coming up with many great effects for the new
cards and brainstorming ideas about the campaign system.
◊ Stanislav Kubeš for tirelessly testing each iteration and providing us
with great feedback and ideas, as well as managing the statistics for balancing purposes.
◊ Radek “RBX” Boxan for putting a lot of effort into creating many prototypes, as well as making it all look beautiful!
◊ Michael Murphy for excellent work as the online community manager, as
well as providing very insightful and detailed feedback.
◊ Michaela Zaoralová for making this rulebook look awesome and being
always incredibly nice, despite the enormous amount of work. You were our ray of hope when looking at the dark clouds of deadlines :-)
◊ Jason Holt for using his uncanny ability to find any rules discrepancies,
as well as his genius in writing the story.
◊ Radim “Finder” Pech and Říman for creating an awesome trailer video!
◊ Vít Vodička and Jakub Uhlíř for their valuable feedback!
Adrian and Ariana for naming the little Rusty!
Everybody from the intense testing in Kavenu: Alf Board, Honzík Šafra,
David “Shrap” Zita and Lenka “slunicko.miki” Zitová, Peťule Pěkná and Karel
“Runemaker“ Pěkný, Danča Bělská, Jiří Kořínek. We are looking forward to
seeing you all again! You were incredible!
The awesome people from DEKL: Barča Rohlíková, Spartik, Michal “Netopejr”
Janič, Ilča, Dominik Soukup, Petr “Navy” Návara, Marie Adesina, Michal Mach.
Thank you for the great gaming marathon!
Our inhouse CGE testers: Fanda, Zdeňka, Tony, Nathan, Eleni Papadopoulou,
Rachel Billings, Atom, Ursus, Štěpán “Kat” Cenek, Jakub Doucek, Kreten,
Vlaada, Alenka, Tom Helmich, Regina Urazajeva, Anežka “Angie” Seberová,
Rumun, Ondra Skoupý, Miroslav Felix Podlesný and John Keith McDonald,
and all the rest of the CGE team – Thank you for fearlessly testing many early
broken and unbalanced versions and offering your valuable insight!
Tabletop testers: Kuba Kutil, Ivan “eklp” Dostál, Miloš Procházka, Vodka,
Lukáš “Houp” Beran, Kristýna Šťastná, Lanzit, Láďa Pospěch, Hynek Palatin,
Filip X, Dominika Končiarová, Melisa, Svetlíková, Radek_M, Ondřej Cigánek,
Zuzana Halaštová, Lucije Minářová, Milan Bača, David “Ragnar” Šudoma
Digital Testers: UtterMarcus, kagura, vrauser2, Laskas, Steven O, Marcmon8,
Grimoire, calltoactionX, 4ja, Lenka “slunicko.miki” Zitová, David “Shrap” Zita,
Rozenbotteljam, a8881995, Kassyiii, Papieski, nyahan, Xiot, kuro, Dionprv,
BigRye, RabbitRain, MarkowKette, IndigoNebula, Tysuga, MadScientist, and
many others. This would not have been possible without you. Thank you!
All the gaming clubs who provided their space for the testing: Kavenu,
Českobudějovický deskoherní klub DEKL, Kundol chasa, iHRYsko Banská
Bystrica, Herní klub Brno
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New Icons Used in This Expansion
T
deck. (You do not resolve the card’s effect.)
You may draw the bottom card of your deck.
If your deck is empty, then this has no effect.
You may choose any guardian you have
overcome whose boon has already been used.
Flip it face up to make its boon usable again.
Choose one of the unused guardians you
have overcome and flip it face down without
gaining its boon.
     U
instead of resolving its effect, gain the
depicted tokens. If the assistant’s effect has
a cost (such as
) ignore that cost.
Activate any site.
Activate any discovered level site.
O
to choose one of the hidden sites, activate it, remove it, and return it to the bottom of the regular stack.
Use the effect of any face-up idol
on the board. If there are no face-
up idols, then this has no effect.
On Chapter Six encounter cards, this
means you gain a face-down idol, one
of those left over after setup.
Use the effect on the silver side of one
assistant available on the supply board.
Use the effect on the gold side of one
assistant available on the supply board.
D
the indicated chapter.
To resolve this idol’s effect, take one of the
2-point temple tiles from any of the three
stacks.
T
hand or play area.
P
to perform its depicted effect.
Don’t Forget!
◊ If an effect generates a travel value that you cannot use immediately, you may still use it at any time before the end of your turn.
◊ If you have to draw from a deck that is out of cards or a stack that is out of tiles, you simply do not draw. (Exception: When you can’t draw from the Fear deck, you
take a fear tile.)
◊ If you play a card effect that lasts the entire round, it will last the entire round even if the card is in exile.

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