In addition to the character cards we play with, which can be found here https://boardgamegeek.com/thread/1686033/new-character-cards, our group also plays with a few other variants.
1. Rezzin: If you have 5 beers then you may spend all 5 of them to revive another character from death. They do not join the game until it is their turn and they return with only 1 life.
Note: This means that any win conditions that occur with them dead still apply until they take a turn. Furthermore, do not count them when counting distance until they have taken a turn.
Note 2: When playing with the ghost variant a player may not be rezzed if they are the ghost.
2. I Didn't Wanna Be Sheriff!: Do not deal the sheriff any character cards. They get to choose from the characters that were thrown away by the other characters.
Note: This goes with the next variant since normally each player receives only 1 character card.
3. Blind Flip: Deal each player 1 face down character card and 1 face up character card. The player chooses to keep the face up card or they must take the face down card without looking at it.
4. It's a Double Gatling All the Way: If a player has the roll for multiple gatlings (or dynamite!) then they apply the result for each one.
Note: Basically Willy can get 2 gatlings if he rolls 4. With the loudmouth die from the expansion he can get 3 gatlings. The Carnie can get up to 4 gatlings with the loudmouth die! Similarly the Carnie can blow up to dynamite twice, or possibly even three times!