They aren't, its down to personal preference of the game. Generally games that come out on xbox and ps3 do come out on PC also, they don't with the wii normally because of the controllers.
yes!
Walmart, Best Buy, Target, these are all good stores for buying ps3 games. However the prices are the same no matter what store the game is at. The only exceptions is used games.
yes if you have a $ USB port PS3 for all other models you can only play select PS1 games and the PS3 games
yes All PS3 games work in every PS3 if they have been Updated and have optional Move components (needed only for the PS3 move exclusive games) see list of many PS3 games on related link
Only on a 60gb I think, and then not all can be.
No both the PS2 and PS3 will play PS1 games
Having a PS3 with only 2 USB ports will cause it to not read PS2 games and having DVD's from a different region than the PS3 will cause it not to read them. I'm not saying that is your problem only something you need to check. All PS3 models play PS1 games and they all play PS3 games which I've heard do not have region codes.
All GB PS3 play all PS3 games. The new PS3 move will require older PS3 to get the latest updates as will the 3D games
All PS3 models can play PS3 games and also select PS1 games
No PS3 can Play all PS2 games
You can watch movies, go online, and play all kinds of games.
no, the internet is only needed for full use of all the PS3 features and Games can be played without going online