I thought of an idea for a trouble in terrorist town like gamemode. There is one or more “aliens”, they float around and posses other players to accomplish various tasks. The aliens can’t kill, but the humans can. I’m not sure how the game should be resolved: maybe the alien dies when it’s current host dies, or the human have to conatin them “ghostbusters” style. I got the idea from the SG-1 episode “lockdown”.
What do you think?