My wife likes to play short-duration word and puzzle games on her PDA. The practical problem is the battery life is pretty short (3-5 hrs) which can then hinder practical work, like planning, shopping lists, etc. So I've considered getting her a portable game system. Do any of the portable game systems, either brand new or a generation or so old, have a good library of fun Word and Puzzle games? Any suggestions and links would be appreciated.