Written by ANCIENT MOAI COOPERATIVE
Table of Contents:
1. Screenshots
2. Installing on Windows Pc
3. Installing on Linux
4. System Requirements
5. Game features
6. Reviews
This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.
1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."
Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.
Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.
2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.
3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.
4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.
A fantasy chess variant. An enchanted board where pawns hide magical secrets. Hatch dragons, transform enemy pieces into unicorns. Outwit clever computer opponents: Jester, Bard, or Wizard —or pass and play. Beginner-friendly to deliciously strategic. Handcrafted pixel art. Local gameplay, so retro!
A family-friendly local game for two players — or one player vs. computer.
Millions of unique possible starting configurations help to level the playing field, and keep the magic fresh.
Finally updated after several millennia:
There's no check – no checkmate! Kings can be captured. Rooks can be boarded. And before every match, each player has the chance to equip the chests of up to three pawns with powerful arcane artifacts. Only you know which of your pawns chests are empty -- and which carry mighty magical items. Your opponent is up to the same tricks, tho! Thus, every pawn becomes a riddle to solve.
Pass your device. Trade turns. Play CHESST across a couch, a kitchen table, or a quiet café. CHESST is a local two-player game — no logins, no servers, no strangers. Just you and someone you like, sharing a board.
Single players face off against a custom AI, featuring three difficulty tiers. Whether you’re a chess veteran or utterly new to the field: prepare to meet your match!
- Pawns with magical secrets (hidden items on pawns — charm, bluffing, intrigue, mind games)
- Seven magical items with distinct effects
- Pre-game Magic Item Mart
- New piece types: Sages, Sorcerers, Wizards, Dragons, Unicorns
- Rook Express — pawns ride rooks across the board
- Two distinct victory conditions
- Local two-player pass-and-play — no internet required
- Three clever AI difficulty levels for solo play
- 20 achievements across Normal, Advanced, and Expert tiers
- Lovingly hand-crafted pixel art and custom sound design
- Score tracking across matches
- Family-friendly — suitable for all ages
CHESST is the debut release from Ancient Moai Cooperative — a small studio thoughtfully making games worth lingering in. Beautiful worlds. Hidden depths. Cozy at cosmic scale.
A bespoke fantasy variant of chess for the curious and young at heart, CHESST is for people who enjoy whimsy. For people who play to discover. For people who want to feel, when they pick up a game, that somebody made it with care.
Questions? Feedback? Game Guide as a pdf? Reach us at hello@ancientmoai.com

I. The Queen's Reach
II. No More Twin Bishops
III. Pawn Rules, Rewritten
IV. Pawns Reimagined
I. The Queen's Reach
Standard Chess = QUEEN range unlimited
CHESST = QUEEN range: 5 squares
II. No More Twin Bishops
Standard Chess = Two Identical BISHOPS (they are exactly the same)
CHESST = Two Unique pieces:
Sage and Sorcerer replace Bishops
SAGE (light squares) & SORCERER (dark squares)
SAGE moves just like bishop.
SORCERER moves diagonally in two modes:
1) teleport-capture: to enemy piece at least two squares away --cannot repeat on very next turn/move.
2) move: only one square.
III. PAWNS, Reimagined (Rules Rewritten)
Standard Chess = en passante, Yes! & all may promote
CHESST = en passante, No!
PAWNS promotions are item-specific
IV. PAWNS, Reinvisioned
Standard Chess = no special abilities
CHESST = May carry & use a magic item; may board friendly rooks
Email us at hello@ancientmoai.com