Trial/Full - Give out a small part of the game (like they handle out small bits in a grocery story) and save most of the stuff for the full version. Trial has roughly 1/20 of the material. Standard/Pro - Have a free standard version with a pro (gold) version containing extra material. Give away the steak but sell the sizzle. Standard contains about 1/2 or more of the material. So what are your thoughts? Pro's and Con's with each approach? What are your own experiences?