Classic co-op Space Invaders — two cannons fighting the same alien waves on a shared screen. No alien drop mechanic. Survive together or fall together. Communication and coordination are everything — divide the screen and cover each other's blind spots.
Controls
- Arrow Left / A — Move cannon left
- Arrow Right / D — Move cannon right
- Space — Fire missile
Rules
- Both players share the same screen and fight the same alien waves
- Destroyed aliens are simply destroyed — no drops on opponent
- Game over when aliens reach the ground or both players lose all lives
- Scores tracked individually but the goal is shared survival
- 10 waves of increasing difficulty
Strategy Tips
- Split the screen — Each player takes a side. Overlapping coverage wastes shots and leaves gaps.
- Focus fire on edges — Clearing aliens from the sides slows horizontal movement for the entire wave.
- Protect your partner — If one cannon goes down, the other faces the full wave alone. Keep each other alive.
- Save lives for later waves — Earlier waves are easier. Play conservatively to have lives for waves 8-10.