Hmm after looking through all the other suggestions... i think it would be cool to see
- Some sort of travel pack game including crosswords and other pen-paper games... add it to the current soduko game
- Chess!
- some simple mario bro clone... i saw a cell phone with one
- a bejeweled clone
- snake
- centipeed
- pinball =O
- dance dance revolution using the control pad thing
- some puzzle package game.... with just a whole bunch of random puzzles
- a card game with a bunch of different ones included (add onto the existing texas hold 'em)
- mahjong, mandala etc.
as for the whole copyright issue why can't you just sell the brand name ones on the marketplace?
I'm not a shadow in this world where even shadows melt away (Taiyou, Bump of Chicken)