It's chess, but the rules keep changing! Add new rules, adapt to events, and watch as the board and its pieces change with each move made. No two games are played the same!

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Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“This game had a limited timeline, scope, budget, and development team, leading to a product that, while functional and complete with various additional features, may leave some players unsatisfied with the available options or experience. Refining the game's underlying systems, implementing online multiplayer, and optimizing game performance took a substantial amount of time during development, and even then may not be up to some players' standards of quality. Releasing the game in Early Access is the best option as it allows players to enjoy the game in its current state while allowing developers to collect and analyze player experiences and input, understand what works well and what could be improved for future updates, and overall assess future plans for the game.”

Approximately how long will this game be in Early Access?

“The game is planned to be in Early Access for at least a year, but more time may be needed for future development.”

How is the full version planned to differ from the Early Access version?

“We plan to add a lot of features originally planned for the game that didn't make the cut given the timeline and scope of the game's development. This includes the ability to create custom starting boards and game presets, introducing even more rules and events, implementing special board space types, actually having music, polishing the game's visual art style, animations, and user interface, and optimizing features and performance across the board. Steam Workshop support was considered as well for custom chess piece textures and animations.”

What is the current state of the Early Access version?

“The game currently exists as a lightweight, slightly-beyond-minimalist version of the initial scope; chess matches can be played to completion and forfeited, rules and events function properly and interact well with each other, basic options and game setup are available to the players, and online multiplayer exists to a satisfactory degree.”

Will the game be priced differently during and after Early Access?

“No, the game will remain the same price regardless whether or not it is in Early Access.”

How are you planning on involving the Community in your development process?

“As a small developer, listening to community feedback and suggestions is something we'll do to best evaluate what to include or change for future updates. We will do our best to stay involved with the community through the game's Community Hub and explore other options for community involvement as well.”
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This game is not yet available on Steam

Planned Release Date: April 2026

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About This Game

What is CalvinChess?

It's chess, but the rules keep changing!

CalvinChess is a chess variant with roguelike elements designed for multiplayer gameplay and chaotic fun in mind. After each turn, a player is presented with a choice among various rules or events to apply to the board, changing how pieces move, where they're placed, or even which spaces exist where!

For example, one rule makes rooks move like bishops. Another makes pawns move like knights. Some rules introduce new moves to pieces to allow for new options, and others alter the direction they move on the board. Since rules apply to both players and expire over the course of the game, being able to adapt to change and strategize around a dynamic playing field is a necessity for victory.

Features

  • Customizable game setup - Games can be customized to add/remove certain rules, change the frequency of when they appear and which player gets to choose, what the initial board looks like, and more! If you really wanted to, you could play normal chess!

  • Cartoony and satisfying visuals - Pieces slide into place, move in sequence, and spontaneously combust upon being taken! Also, they all have googly eyes!

  • Dynamic game information - Hovering over a piece while it's your turn visualizes where it can move, factoring in new rules and whether or not a move would put a king into check. Rules affecting specific pieces will also be highlighted as necessary. No need to do all that mental math in your head!

  • Personalization options - Choose what colors the dark and light pieces are!

  • Local and online multiplayer - Play using one computer passing the mouse back and forth or play over an Internet connection! Either way, you're bound to make (or break) a few friendships!

Have fun!

System Requirements

Windows
SteamOS + Linux
    Minimum:
    • OS: Windows 10
    • Processor: x86_32 CPU with SSE2 support, x86_64 CPU with SSE4.2 support, ARMv8 CPU
    • Memory: 2 GB RAM
    • Graphics: Integrated graphics with full Vulkan 1.0 support or Direct3D 12 (12_0 feature level) support
    • Storage: 150 MB available space
    Minimum:
    • OS: Any distribution released after 2018
    • Processor: x86_32 CPU with SSE2 support, x86_64 CPU with SSE4.2 support, ARMv7 or ARMv8 CPU
    • Memory: 2 GB RAM
    • Graphics: Integrated graphics with full Vulkan 1.0 support
    • Storage: 150 MB available space
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