Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics

I have heard about some really great visual artist that had their artwork copied. So it can happen. But you need to be really, really good for people to bother stealing your stuff. I had one of my posters stolen once. The thief took that big-ass A1 poster down from inside the cinema!

A suggestion: add your name somewhere inside the game. Then even if someone steals it, you'll still get credit!