Tower Onslaught is a path-defense game in the spirit of Bloons TD and Desktop Tower Defense. Enemies wind along a road from the gate to the portal; you build off-road towers to stop them. Eight towers, each with two mutually-exclusive upgrade paths, unlock permanently as you climb the waves. Eleven biomes, a Normal/Hard split, and a hidden finale against the Cosmic Leviathan.
Cover the longest straight road segment — towers want their kill window in their attack arc. Hairpin turns are wasted on long-range towers; put splash and slow there instead. Commit to one upgrade path per tower; the trees diverge hard and a half-upgraded tower is half the tower. On Hard, you'll need a slow source by wave 10 — pick a frost or glue tower early and route the whole map around it.
Hit the Fullscreen button in the bar above the play area to expand. To exit, press Esc (or swipe down from the top edge on touch) and tap the Exit button that slides in.
Tower Onslaught is a classic tower-defense test: where do you spend limited money so that every shot matters? The best placements cover bends, overlap with slows, and keep firing for as much of the enemy path as possible.
Do not spend down to zero before you know what the next wave contains. A small reserve lets you answer armor, speed, or swarm pressure without selling your whole plan. Upgrade towers that already have good coverage before building new ones in weak positions.
Choose Tower Onslaught when you want a clean tower-defense baseline. It is less about gimmicks and more about fundamentals: range, timing, target priority, and learning how each enemy type stresses the layout.
Behind the scenes: Making Tower Onslaught — a love letter to Desktop Tower Defense →
