This is a remake of a game originally published in a magazine for the PC-8001 (N-BASIC).
- Enemy aircraft move from left to right across the top of the screen, and drop down one level when they reach the right edge.
- If the enemy aircraft passes the bottom level (21st level), it's **GAME OVER**.
- Fire the three fixed turret fighters using **Keys 1, 2, and 3** (or the buttons at the bottom of the screen on smartphones).
- Each aircraft has **25** missiles.
- Score: Aircraft 1 **30 points** / Aircraft 2 **20 points** / Aircraft 3 **10 points**.
- Hitting all three aircraft on the same level earns a **200-point bonus**.
- Retry with **Enter / R** or by tapping.
A game where you shoot enemy aircraft moving from left to right.