1Tap or swipe toward a glowing socket to move there. Then it's the other player's turn.
2Each move lays a filament at 33%. Extending your chain brightens the ones behind to 66%, then 100%.
3Move onto a red-ringed socket to dim that enemy filament and its neighbours.
4At 0% it burns out and drags its neighbours down too — weak grids collapse in chains.
5Surge buys a second move. Three each per game.