Underrated Gamemodes

MexicanBorderRp is sort of fun. A lot of racists and toxic people though.

Market Fog, NZombies, and Sacrifun.

HL2RP is one that comes to mind.

It is a text only character based rp server. A lot of the time on the server you will spend talking to other players and developing your character. But when push comes to shove, the combat can be very entertaining and even suspenseful. On most servers, a lot of the combat takes place in turn based /me's between characters, but other times you can be shot on sight. This gamemode is not for people who like constant action and the general toxicity of modern gmod servers, it is for people who like ACTUAL RP. You spend time simply developing your character and getting your name known.

In my opinion, TTT and darkrp are funny

S.T.A.L.K.E.R RP, Pretty fun if your into the Stalker franchise.

Ttt, surgival, zombies, murder

ZombieRP is extremely fun when there's players on it. Think DarkRP with naturally spawning zombies n whatnot you can deal with.

I think RP on NutScript and Hiden

Minigames was really big in 2013, but lately it's going up again. So i can higly recommend to test minigames out

Nutscript, HL2RP, Breach, bunch of others I don't remember, I really miss Gmod Tower a lot, that was fun