@TigerMask said in Post here if you can't remember the name of a game!: This is driving me crazy for decades at this point! It's either a Sega Master System of Mega Drive/Genesis game. It was a platformer and the only level I can remember is an underwater one. The main things I remember were having to avoid sharp obstacles (Maybe sea anemone?) and the boss of the level was an lantern fish. You had to hit the lantern on the fish's head to do damage to him and his colour palette would change as he took damage. I distinctly remember my mum playing it but doesn't remember. Any help would be much appreciated! Thank you Sagaia? https://darius.fandom.com/wiki/Alloy_Lantern

Try https://www.reddit.com/r/tipofmyjoystick/ :)