Branchbound

Grow one shared treeBranchbound is a compact abstract strategy duel about a luminous tree both players are trying to keep alive. One simple rule. Sharp decisions. Each turn, choose an open node, extend a branch in one of eight directions, and set the new signal's colour. It may not repeat the colour of any neighbour. Verify a legal move to pass the turn; verify an echo and the branch breaks immediately.A small field, a mathematical coreAt its core, Branchbound combines a growing rooted tree with local graph colouring: every legal move extends the tree while preserving the neighbourhood colour constraint.

It is inspired by finite-tree and graph-colouring problems; it does not compute Busy Beaver or TREE(3). Play your wayA local hotseat duel or practice against Moss, a deterministic bot. Two, three, or four colours on compact 9×9 or wide 11×11 fields. Mouse, touch, and keyboard controls with a collapsible turn panel. The final tree and best results saved only on your device. Fully offline, with no account, server, or in-game purchases.

Language supportThe game interface and controls are available in 14 languages; see the Steam language table for the current list.