The Castle (Multi, 1985) - WIP

Temporary scuba gear lets you move through water
Platforming and physics puzzles
Basic mini-map (shows the world layout and which rooms you've visited)
Color coded keys and doors
? No save feature?
NES ver.: More linear and you don't need to save every key

Let's Play (Russian) - Find Review

Influenced by: Probably Sokoban, possibly Montezuma's Revenge, SMB, Doki Doki Penguin Land, Pitfall II, Knight Lore, Journey to the Centre of the Earth, Pyjamarama

Influenced: Possibly Dizzy, Eggerland/Lolo series