The idea
Giant insect zwerks enter through the gate on the left and run for the gate on the right. Every zwerk that gets out costs you lives. Lose all lives and the game is over; survive all waves to win.
Build a maze
The field starts empty. Towers take one square and snap to half squares, so you can line them up or offset them. Zwerks always take the shortest open route, so use towers as walls to make that route long. You can't close the route completely. Zwerks fit through half-square gaps; big ones squeeze through slowly. Flyers ignore the maze and fly straight across.
Modes and waves
Classic: zwerks enter on the left and leave on the right. Hard: a second stream enters at the top and leaves at the bottom, so one maze has to slow both. Play 10 waves, 100 waves, or Endless — after the first 10, waves are generated and keep getting tougher, with a boss every 10th wave. Each mode and wave count has its own leaderboard.
Controls
1–7 pick a tower · U upgrade · D sell · S start or send the next wave · P pause · F speed 1×/2×/3× · Esc cancel. Mouse: hover shows where the tower goes, click builds. Touch: tap to preview, tap the preview to build, drag to move it.
Offline
Once this page has loaded, the game keeps working without a connection. The leaderboard needs the network.
