Hold the line. Build, upgrade, and specialize your defenses across 50 relentless waves.
Enemies march from the red portal to your blue core. Every leak costs lives — lose them all and the run ends. Survive all 50 waves to win, then keep going in endless mode.
Pick a tower (or press 1–8) and click a buildable tile. Hold Shift to keep building the same tower. On maze maps you can build anywhere, but you can never fully seal the path.
Towers reach level 5. At level 3 you pick one of two permanent specializations that reshape how the tower behaves — long-range precision versus rapid fire, huge blasts versus pinpoint mortars, and so on.
Physical damage is reduced by enemy armor; magic (frost, tesla, blight, flame) ignores it entirely. Armored waves want magic or armor-piercing shots. Flyers ignore the ground route — keep anti-air coverage everywhere.
Gold comes from kills and wave clears. Starting a wave early pays a bonus, and you earn a little interest on your bank each wave — banking pays off, but only if you survive.
The War Beacon has no weapon. It boosts damage, range, and fire rate of every tower in its aura — and its Fortune path makes those towers earn extra gold.
| 1–8 | Select tower to build |
| Q W E | Airstrike / Blizzard / Overcharge |
| N | Start next wave (bonus gold) |
| U / X | Upgrade / sell selected tower |
| T | Cycle targeting mode |
| F / + - | Game speed |
| R | Toggle route overlay |
| Space | Pause |
| Esc | Cancel selection / pause |
| M | Mute |