Tower Defense — hold the line for 56 waves
A machine army marches toward your gate. Place towers on the empty tiles beside the path, upgrade them as gold comes in, and pick one boon each time you clear a zone. No install, no sign-up — and the wave you reach goes on the global leaderboard.
How a run goes
You start with 20 lives and 280 gold. Build, then press ▶ to call the wave — calling early pays you the leftover timer in gold. Every seventh wave is a boss, and a boss that reaches the gate costs 5 lives. Clearing a zone refunds every tower you built, hands you a new map, and offers three boons.
Eight towers
Machine gun (cheap, fast), Cannon (splash, ground only), Frost (45% slow), Tesla (chains to 3), Laser (long range, pierces a line from tier 3), Sniper (ignores armor), Missile (big splash), Amplifier (buffs the 8 tiles around it). Levels 1–4 change how a tower looks; after that, paid refits raise its numbers without limit. Each zone caps how many towers you may have (14 in zone 1, +2 per zone), so what you build and what you upgrade is a real choice.
Ten enemies
Grunts, runners, armored walkers, drone swarms, shield bearers, repair bots, flyers that ignore the path, splitters that break in two, jammers that slow your towers' fire rate, and a different boss in every zone.
Controls
Tap the screen, or use Q W E R A S D F to pick a tower, U to upgrade, X to sell, Space to call the next wave and Tab for speed (1x, 2x, 3x).
Ranking
Ranked by the wave you held to; ties break on kills. Clearing all 56 waves opens an endless invasion where the top of the table is decided.