An interesting case of this is the localization of the original Pokémon games. Before they were released officially in North America by Nintendo, a group of Chinese software pirates "translated" them into English first and sold them. The official translation came out later. Needless to say the unofficial translation is totally screwy in a hilarious way. What's even more interesting though is that it's a hyper-literal translation, so things that were localized out in Nintendo's translation (alcohol, death, gambling) are presented in full glory. Team Rocket is known as "The Regiment of the Guided Missile" and the Pokédex is known as "the illustrated handbook of PET," spelled out fully every time. Pokémon are referred to as PETs in general. There's an item called sulfuric acid.

I had a great time playing it and noting the differences/absurd translations with my friends.