Space Panic

Space Panic (arcade)  1980

First platform game, advanced separate levels layout.

Arcade system: unique

Gameplay video

Magazine review- Electronic Games (1983)

Trivia:
1) The "trap-em-up" premise of the game (digging holes to trap aliens) is likely to have been inspired by the then-contemporary Heiankyo Alien (a 1979 game for PC-8000), but while that game is set in a maze viewed from above, Space Panic used platforms and ladders viewed from the side.

2) First game with separate levels was Ozma Wars.

3) Emulated in: MAME