I'll add a few games I enjoy.
3D Mines -
http://toyspring.com/3dm/
Very cool version of Minesweeper. Many different 3D shapes. WVGA.
Astraware Games - (Bejeweled, Sudoku, Hammer Heads, Chuzzle, and others).
http://www.astraware.com/ppc/
These are fun, and some are WVGA.
I want to suggest the PDAMill Gamebox games (Solitaire I & II, Fun Factory), but they aren't WVGA friendly. I only suggest them because they were fun on the -TP1.
http://www.pdamill.com/series_gamebox.shtml
Tiki Towers
Fun game. WVGA friendly
Boom Blox -
http://store.handmark.com/p/6066//Bo...le-Pocket-PC/-
WVGA
Resco Games -
http://www.resco.net/games/
Great Games (Bubbles, Sokoban, Brain Games, etc..) WVGA