I would say 30-35, max 40.
The current 19 plus:
Games with a strong chance
Resident Evil: Umbrella Chronicles
MySims
Lego Star Wars: The Complete Saga
Sonic and the Secret Rings (probably very close already, "other" numbers haven't been updated in a long time)
Rayman Raving Rabbids 2
Mario Kart Wii
SEGA Superstars Tennis
Star Wars: The Force Unleashed
Animal Crossing (if it is actually released 2008 in japan)
Games with an outside chance
Pokemon Battle Revolution (only about 130k to go but is only selling around 5k WW a week, most in PAL regions where it hasen't been out very long, a price drop will get it there though)
Dragon Quest Swords: The Masked Queen and the Tower of Mirrors
Pro Evolution Soccer 2008
LEGO Indiana Jones
Ghostbusters
Wii Music
king's story
+ a few unannounced games
