Garry's Mod is quite a fun game. There are few flaws, including the fact that you have to download items. That is easy to get over and you'll quickly have a large inventory of ragdolls and props to pose at your will. The other problem relates to this fact, as you'll probably end up with quite a laggy game if you download too much Ragdolls. I got round this with a new Hard Drive, Graphics Card and Processor. Don't let the name fool you though. Garry Newman is not the sole creator of the game-instead, he was assisted by the forum, Facepunch. Overall it's quite a fun game if you can find good addons for it.