Does anyone know any good FPS or RPG games? Or both of these combined?

Actually, im looking for just a fun,Garrysmod type physics game, which will hopefully have realisticwater and stuff to mess with. Throw ragdolls around and build stuff. Just more realisic withwater to mess with and destruction and stuff. Thank You

Does anyone know any good physics games or demos? Or a game to mess with water. If anyone does,plz post a link!:)

Actually, im looking for just a fun,Garrysmod type physics game, which will hopefully have realisticwater and stuff to mess with. Throw ragdolls around and build stuff. Just more realisic withwater to mess with andrealistic destructionand stuff. Thank You!

Where can i find this SDK?:question: