Made on a site called beepbox where you can make 8-bit sounds and export as wav. I make 8-bit games and thought i would contribute back to this site which has helped me in so many situations over the years.
A sound that could be used to say 'correct' or 'well done'. This sound was created in cubase using the prologue instrument (i think. . . It might have been retrologue i can't remember).
A game-like artificial sound that you would get on a "power up". Created on bfxr and modified with audacity. Released to public domain, i hope it is what you were looking for!.