Since downloading the original Supermario Land for the Gameboy is illegal (its protected by tougher laws unlike many other Gameboy games), I discovered this rare gem for the gameboy.
Someone hacked the original game (like the famous "Super Pika land") and made it all about our beloved hero, Optimus Prime! There used to be an official NES Transformers game based upon the Mario game engine (or looked like it should have been) but is was notoriously difficult to play.
Check out the site here:
http://www.vazcomics.org/mamend/gamend/gbc/optprime.htm
The download to the game can be found by clicking on the words "sì (VisualBoyAdvance 1.5.2)" (next to "savesate") on the page. I wont direct link to the download to protect the interests of TFans and also not to steal bandwidth.
As a bonus, there are other TF games that can be downloaded as backups if you are interested. These are (agian, the links are to the site, NOT the file in question, to protect the interests of TFans.com):
- Transformers Beast Wars: http://www.coolrom.com/roms/gbc/b/ (scroll down until you see "Beast Wars")
And many more games were made by this fella here (inlcludes links to all his TF hacked games that he made):
http://datacrystal.org/wiki/Grimlick