Time Travel MafiaA game with a unique time-traveling mechanic. Though both town and scum play was fairly average, the game makes the list due to its sheer ingenuity.
Liberal Crime Squad MafiaAn interesting mafia game, in that the rules constantly changed based on the scum's night actions and the town's votes during the day. Not only that, but the third party dynamics were interesting as well.
Color MafiaA game where each player was assigned a color. Not only was the mild bastard modding solved, but the game ended with two masons against the remaining scum, after a risky survivor gambit where the masons pretended to be scum. A very strong game all around, save the jester gambit at the beginning. Don't copy that.
Toon Mafia IVHas a Tom Cruise cult. You should read it for this reason alone.
Toon Mafia VHas an embedded dethy setup and the board's first successful staged fight. One role gains power from being insulted. Another one grows stronger by behaving angrily, which is mirrored by a second role which must act happy. Successful town victory over a very strong scumteam.
Bay12 MafiaThis is the first run of Bay12 Mafia, which contains roles based on players here at the subforum. Other than brilliant flavor written by Leafsnail, the game represents the first scum victory over a confirmed townie directing the town.
MSPA MafiaEveryone was scum and won. This is what happens when you hand out horribly broken survivor roles. Also notable were the death cult, survivors, multiple scumteams, and multiplicity of cults... all in a game with 11 players. Perhaps better left unmentioned was the sudden change of one player's role to "a fish."
Rysith's Semi-Bastard Mod MafiaThe scumteam was able to make fake mod posts, and the first two or three days were spent with the town trying to figure out how to vote. In the end, the remaining scum player (and Pal Erdos) won when the scum "gave up" and asked to be lynched. Seriously, you have to read this one to believe it.
Cybrid Mafia: Infiltrate//Seek//EliminateTwo towns versus a cult. Somehow, despite the entire cult being weeded out (due to an internal traitor), they still managed to win. This may have been slightly cheap, but at least it was interesting.
Cybrid Mafia 5An interestingly constructed scumteam, comprising an allied SK and Survivor combo, complete with a win from behind and excellent endgame play from all factions.
Choose Your Own Masquerade was a regular semi-open mafia game the following points: there were no nights, players start with a number of points they can by role powers with, and there were mechanisms for gaining news points, and buying & selling powers throughout the game, and each player had a secret mask colour. Powers could only target masks and there were ways to swap masks in play. Scum put all their eggs in one basket, with one scum taking a kill and two others supporting him. The killer immediately had their kill stolen by a changeling randomly picking targets, and 4maskwolf viciously bussed his two scum mates getting everyone to believe he was town, right up until a townie killed him on a hunch.