Doomtown: Reloaded is the only “active” card game for me atm. Then i play some “dead” ones like:
Legend of the Five Rings CCG (mostly online)
Warhammer 40K Conquest LCG (which got second life with fanmade Cycle and Deluxe expansion)
The Spoils (as it’s crazy fun MtG clone)
Rarely i got occassion to play some 7th Sea, Legend of the Burning Sands, Dark Eden and WARS (Decipher).