You are the fungus under an old forest. The mother tree (gold crown) wants to talk to every other tree.
Drag from your network to grow threads one square at a time, or tap a square next to it. Each square costs nutrients. Reach every tree before you run out.
Tap a thread to snip it (and everything beyond it) for a full refund. Branches can split anywhere, so sharing a trunk is cheaper.
Keys: arrows move, Space grows or snips, Z undo, R reset, H hint.
Finish a level to open the next. ✓ marks a finished level; “lean” means you matched the cheapest possible network.
Every tree is linked to the mother tree. Water, warnings and sugar flow through the threads you grew.