A survival game with integrity: the developers will tell you straight up it is a work in progress but do not be dismayed. Rust is a game that has had time put into it and is worth adventuring in. The voice chat ingame is excellent, if you get to a server where everyone does not kill on sight you have probably found Heaven.

There are a few main ways I can think of to play.
-Roleplaying servers
-Servers with rules (no griefing, raiding limitations, etc.)
-No rules
-Survival battlegrounds

The one thing I'd warn is that there are hackers that can ruin all of your hard work. As long as your server has active admins however, this shouldn't be a problem. Have fun!