Heres an overview (not confirmed to be complete):
Drawing:

These games have commands like Locate, "Text". They are generally quite fast.

These games use graphic commands such as Plot, F-Line, DrawStat, etc. They are generally better looking.
Highscores/Maps/Worlds/Levels:

Lists are somewhat limited (Rows x 1 column), though you can use them for stat graphs (in fact, you have to use them). Though im quite sure there are many games where lists are just fine.

Matrices are user defined (usually at runtime) and can have as many Columns x Rows that you want, so they are useful for reading level data, etc.
So we need a balance! A game that looks nice, but isn't too slow. A game that doesnt take half your calc's memory up for its matrix data. What do we have? Unfortunately, a few 'graph screen' games just dont cut it with regards to speed. Well, i have been considering the opportunities, and am developing a sidescroller game for the CFX (though its not quite finished) + level editor (already done). It is looking real nice at this stage, though it does need more features. It employs known techniques that are not commonly used (dont know why).
Updates soon.

Updates:
-(1) You can walk around, but i need to fix the code so you can walk to the end of the level. (You can get within a few steps of it, but if you try to get close you start floating)