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

[platformmaster918]

Crash 3. 100% completion in 1999 (got it Christmas 98 along with my PS1)
Spyro 1 I beat first but not 100%, in fact I didn't go back and finish it until I got it on PS1 classics this past Summer so it only took me 14 years lol