Without a doubt, Garry’s Mod (Gmod) can be played and enjoyed by running it onto the source game engine as the first and the best option apart from the fact that you are able to play the gameplay of Gmod on some alternative sources, too.
So, it totally depends on your mood what way you would like to have a great time with! Alternatively, players can as well make use of community-created collections in the absence of the source engine game.
When talking about the use of props, you will have PHX3 and when you would like to have fun with ragdolls, you will have the option of Civil Protection.
People of all ages can play Gmod & enjoy it from the beginning to the end. There’s no age restriction. Gmod or Garry’s Mod is all about testing your gaming skills. So, it’s time to move on and let a nonstop fun begin to amuse you!