Since I now found kinda the exact same Glitch in 2 different games, which is "Item Duplication" I wanted to ask if it's known in other games and in how many other games it could also work? The glitch is easy to explain: Collect an Item or Collectable AFTER exiting the Level (After hitting "Back to hub" or "exit level"). By that you can collect the same Item/Collectable again and again.
Here are 2 videos explaining the glitch, one in Gex 3 and one in Muppet Monster Adventure.
In MMA: In Gex 3:
Not an item duplication glitch but some platform skipping glitches etc. are possible in both Oddworld: Abe's Oddysee and Oddworld: Abe's Exoddus.
That's mostly because the second game is made with recycled code from the first one. I'm pretty sure that's also the case with many other games.