Grid Guardians

Play the whole game with taps - touch a turret and every move it can make lights up. New: END TURN, power badges on every turret, and a guide that teaches as you play.

Tower defense, one turn at a time. No timers, no twitch - think for as long as you like, then make your move.

Enemies march one cell per turn. Your turrets fire down their rows every turn. Place them well, merge them higher, and see how long you can hold the line.

HOW IT PLAYS • Tap a turret and every cell it can reach lights up. Amber to place or move, green to merge, blue to trade places. Dragging works too. • Break the power cores drifting across the board to earn new turrets. Two in one turn fuse into something bigger. • Merge up the ladder — gatlings, then rockets, then flamethrowers, from power 1 all the way to 256. • Nothing worth moving? Hit END TURN and your turrets fire anyway. • Boosters for when the line is about to break: Meteor Shower, Freeze and Double Attack.

ENDLESS BY DESIGN Every run is a fresh board, and every turn you survive is a point. Beat your own best, then take it to the Game Center leaderboard.

BUILT FOR SHORT SESSIONS A turn takes as long as you want it to. Nothing is timed. Speed the enemies up to x2 or x3 once you already know your move, or sit and think it through.

LEARN IT IN A MINUTE The first run walks you through each move as you play. The glowing hints stay on afterwards to help, and switch off under Pause when you no longer need them.

KEEP YOUR PROGRESS Sign in with Apple and your best runs, hearts and revives follow you to a new phone. Signing in is optional. Come back each day for a seven-day reward streak.

The enemies get tougher the longer you last. How many turns can you hold?