ChainRom is a browser-based project exploring how complete games can be stored and verified on an EVM blockchain. Rather than serving a game from a conventional website, it deploys the engine and game data as contract code. A browser retrieves the bytes from blockchain state, checks them against an on-chain commitment, and runs them only after verification.

The project offers several playable experiences, including DEPTH, a first-person maze; SIEGE, a top-down arena shooter; DRIFT, a vector asteroid shooter; and BATTLESHIP, a one-on-one naval duel. DEPTH is presented as an original game built specifically for the project, with its raycasting renderer, textures, level, and creatures defined in code rather than separate asset files.

ChainRom also provides tools and processes for packaging, compressing, chunking, publishing, and verifying game data, alongside a ROM contract that can check proofs on-chain. Its browser loader rebuilds the data commitment and validates the payload before launching the game.