Impossible Mission on the Sega Master System is one of those games that looks simple at first—just another platformer, right? But then you realize you’re sneaking through a villain’s lair, solving puzzles, and dodging robots that’ll zap you if you’re not careful. The music’s got this weirdly tense vibe, and the whole "another visitor, stay a while… stay forever!" line still creeps me out a little.

What makes it stick is how it mixes things up—you’re not just jumping gaps, you’re searching rooms for hidden passwords, timing your moves around patrols, and praying you don’t run out of time. Mess up, and you’re back to square one. Brutal, but weirdly satisfying when you finally crack a section. Definitely earned its reputation.