A bootleg? It should be the original if you' ve buyed it first hand from germanys best-known computer shop
A little bit more information what happens after choosing language again and some pics:
After choosing language and intro you see Yoshi's Island. If I press START, the save file selection should appear, but the screen gets totally glitched up and luckily file selection works despite the screen is totally messed up.
Next is the map selection (first screenshot), but you can only chose the first level. After the glitched up level name SÔ, the game appears to be normal, but only if you don't press START because the pause screen glitches well
The next things that happen will freeze the game:
The first time you get hit by an enemy, you'll get a text-box that explains what to do, but now it just opens and closes itself immediately!
Now you can play a bit further, but the next box that appears cannot be closed, you have to reset.
On next start there are no safe-files, but all the glitches are gone, too. Until I try to get 100% again. (And I won't try)