Goal - enemies march from the spawn ▼ down to the exit ◆.
Build a maze of towers to route and destroy them before they reach
your cores. Lose all cores and it's game over.
Build - drag a tower from the shop onto the board. Every
tower is also a wall, so placement shapes the enemy's path. Tap a
placed tower to upgrade it or sell it for a refund.
Terrain - some hexes are solid rock (impassable - enemies
route around it) or craters (enemies cross them, but you can't
build there). Each level has its own layout.
Gates - on levels that allow it, drag the spawn ▼ or
goal ◆ to any open hex to reposition it - enemies instantly
re-route. You can't seal the maze or trap an enemy, so some drops are
refused.
Economy - killing enemies earns credits; spend them on
new towers and upgrades. Press ▶ Send wave to start the next
wave early, and to fast-forward.
Pulse - fast, cheap single-target fire.
Laser - continuous beam; pierces at high levels.
Mortar - slow, heavy splash damage.
Snare - deals no damage, slows every enemy in range.