If this is your kind of geekery, by the way, you should visit TiCalc.org for all the latest games and apps.
If you’d like to load sumo wrestling, or any other of hundreds of games, onto your calculator, ticalc.org is the place to go. They’re pretty damn cool. For example, here’s the full animated demo of Sumo Wrestling:
Just don’t play in English class. I know at least one of you has a teacher who’ll remember me if you say where you got the idea.