Super Mario World, this was the first game I played religiously, I remember I was such an expert, that I memorised each level, I could do speed runs and I knew every secret, why because it was the only game I owned for ages.
Alex Kidd in Miracle world brings back tons of memories, I remember I used to play at my neighbours, however I didn't used to get that far, used to get game over after once of the motorbike stages.
Twisted Metal 2, I remember me and my cousin used to play Twisted Metal 1 demo over and over again, because it was a demo, the demo used to restart with tons of loading screens. However, one day I was at a gamestore with my parents and I saw Twisted MEtal 2 (didn't even know their was a sequel), went crazy to get the game, and my parents bought it for me, finally me and my cousin got to play a full Twisted MEtal game the Paris stage was our favourite.
Donkey Kong County 2, I remember being amazed by the graphics of the first game, but this game really got me immersed, I remember loving the music and doing all the secrets.
Yoshi's Island, I fucking loved this game when I was young, one of the coolest thing I remember was that the bosses were bigger versions of regular enemies.
Suikoden, this was my first ever JRPG and has a special place in my heart, probably the story sucks now but I remember loving the story, the death of certain characters, the recruiting, the music and etc. It made me a huge fan of JRPGs