What was your 1st game you have beaten without a strategy guide/Gameshark/Cheats?

[Marucha]

The Fury said:
But I'd say... Sonic 2 on Game Gear. But then all you needed to do was find all the Crystals and beat the game.

Yeah but how many packs of AA batteries did you have to go through before you were able to finish it? Unless you had the AC/battery pack...