Darkrp Garry's mod

I recommend that you tweak some of the basic darkrp game mode and add some custom careers not just default job that allows the player who does not have any experience to rdm people.

steamcmd is good for making a server
darkrp i recommend you customize it with your own code

Everyone else is saying it, and I guess I will to just to drive it home: Customize your DarkRP script and you'll probably have much better luck standing out than a fresh-out-of-the-box script. The more you can modify and make it your own, the better. Or more specifically, the further you can get it from basic DarkRP, the better. You know... Because basic DarkRP is kinda lame.