it's an old game (at least 15 years old) where a boy with shoulder length brown hair, has a yellow shirt and (I think) green pants goes through 4 levels (forest, pyramids, medieval castle and lastly a spaceship) collecting fruits and letters. the boy can defeat animals by jumping on them twice and they drop fruits. the end is basically Mario-esque, where he saves the girl. please let me know if you know anything!
Source: https://www.reddit.com/r/oldgames/comments/11puiqj/looking_for_a_game/