Forgotten Worlds, from 1991, complete gameplay.
Developer: Sega
Publisher: Capcom
Sega Master System / Sega Mark III version.
Video shortcuts:
[00:28] Stage 1: The Metropolis
[03:08] Boss: Paramecium
[03:34] Stage 2: The Doomed Harbour
[06:09] Boss: War God
[08:11] Stage 3: The Pyramid Of Terror
[11:01] Boss: Sphinx
[13:07] Stage 4: The Ocean Floor
[15:58] Boss: Giant Crab
[17:32] Stage 5: The Cosmic World
[21:24] Final Boss: Bios
[23:09] Ending
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