Grow one luminous tree together. Choose a direction and colour, verify the branch, and never echo the colour of a neighbouring signal.
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Match strength key:80+65+50+<50Branchbound
SteamAbout Branchbound

Grow one shared tree
Branchbound 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 core
At 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 way

Language support
The game interface and controls are available in 14 languages; see the Steam language table for the current list.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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