CS or Dota.

Doom.

>>339798762
How much is a "decent size"?

Asude from Brood War (though that's dying), maybe SSFIIT and KOF98/KOF97. SSBM is pretty popular. Probably counterstrike. I don't know what the player count for games like quake and unreal tournament is like nowadays.

>>339799289
Decent sized
>>339798762
Either the original dota which is still being played by thousands or Starcraft if you count Korea

>>339799631
>How much is a "decent size"?

Thousands like >>339799636
said.

TF2.

>>339798762

There are ancient text-based RPGs from the 80s that still have thousands of players.

>>339799986
Oh shit really? Name some anon.

i still play sf3 3rd strike on fightcade
and if you count remakes people still play tetris competitively
and counterstrike is still in top 100 most played games on steam
and warcraft 3 there are alot of pvpgn servers. rubattle eurobattle w3arena nusa reborn and iccup nusa reborn and iccup has like 9000 players daily
and according to quakeservers.net there are ~1000 players daily playing quake 3 arena
and also xonotic which has like ~ 500 players daily

>>339800218
any of the mud's on sdf's servers.

Everquest?

loved the custom maps on broodwar, but the vanilla ones were better.