Overview and Gameplay
Chun must trap every pursuing alien behind the sliding doors on each fixed-screen stage. Doors open or close when he crosses them from the handle side, so each round requires luring enemies through an opening and circling back to shut it. The 50 rounds introduce stairs, ladders, slides, one-way passages, nails, bombs, and enemy-specific movement patterns. Completing Round 50 restarts the sequence while preserving the score.
Controls And Mechanics
The directional pad moves Chun and climbs available routes, while either A or B makes him jump. Doors operate through movement instead of a separate button. Capturing several aliens in one door awards larger point bonuses, and the final group trapped in a round determines the food bonus available in the next stage. Extra lives begin at 10,000 points and continue at set score intervals.
Touching an alien, landing on a nail, contacting a bomb, or falling from a platform costs a life. Captured enemies remain removed after a loss, but doors return to their starting positions. Two-player mode uses alternating turns, with each player controlling Chun during their own attempt.
Release And Credits
- Release year: 1985
- Developer: Chunsoft
- Publisher: Enix
- Original platform: NEC PC-8801
