About this game
BlockOrChain is an original polyiamond placement game with a blockchain twist — every move is a block that chains off the last. No accounts, no downloads, nothing to install.
486 spaces, 22 blocks each
A side-9 hexagonal grid of triangles and the complete set of polyiamonds from 1 to 6 triangles per colour.
Four computer difficulties
Easy plays loosely and hoards big blocks, Medium keeps its options open, Hard fights for space, Expert seals you in deterministically.
Team play
Take Blue and Red against the computer's Yellow and Green. The bots coordinate with their partner colour instead of crowding it.
Full placement engine
True 60° rotation and mirroring on the triangular lattice, live ghost previews, legality checks and automatic blocked-player detection.
BlockOrChain is an original game. Not affiliated with, endorsed by, or connected to any commercial board game or brand.