I'm still not capable of posting anything to Tibia forums because someone reported me! So I'll upload my game. Here it is: Tibia for the TI 83/84-Plus Calculators! It's not real Tibia and nothing like real Tibia gameplay but it is very funny and addicting to play!
Just download the file and send it to your calculator with TI Connect or a similar software.. There are a lot of tutorials around the web, just google it.
When in game, just run into the shop and by a knife else you will certainly die, even facing a rat! x)
Hope you like the game, you help me developing a better version if needed. :b