Strategy
A 3D tower defence game. Monsters march along the road to your castle: goblins, orcs, fast wolves, armoured knights, bats that fly over cannons, huge trolls and, at the very end, a dragon. Build archer, cannon, frost and magic towers next to the road, upgrade them twice and use the gold from every monster you stop.
Survive every wave with at least one castle heart left. Stars: one for winning, one for keeping 15 of the 20 hearts and one for letting no monster through. Calling the next wave early gives bonus gold.
Click the grass next to the road to build a tower, click a tower to upgrade or sell it. Space calls the next wave. The 2× button speeds the game up. P or Esc pauses.
Tap the grass next to the road to build, tap a tower to upgrade or sell it. Use Next wave and 2× at the top right.