The Escape (Commodore 64, Amiga) by Haplo

Help Ooze navigate through various corridors and laboratories, using its gravity-reversing powers to overcome obstacles and avoid the robotic guards in an attempt to escape from this dangerous subterranean complex.
Collect keys and insert them in the computer terminal to disable the force-field and gain access to further areas.
Can you escape?

This is a port of the Spectrum version to Commodore 64. It features many improvements such as:

Vastly improved graphics, sprites and sprite overlays
Tons of new animations
New screens (including a secret room)
Improved screens and game-play
A minimap

The Amiga version adds these further enhancements:

Improved graphics, sprites, animations and sound effects
A much bigger map (almost double the size)
Two more keys to collect
New enemies and hazards
The minimap tracks the visited rooms

Note: Some older versions of WinUAE (such as 4.9.x) seem to emulate sprite-background collision detection incorrectly. If you experience any issues with picking up items please upgrade your emulator.

Credits:

The game is compatible with both PAL (recommended) and NTSC machines. Press SPACE (C64) or S (Amiga) during the game to switch between music and sound effects.