When farming coins, you should maximize the net worth of all 4 players:
- Do not pay coins for any actions that don't result in net gain of coins, such as paying coins to steal coins from another player.
- Enable bonus stars.
- Go for extra coins in minigames whenever possible.
- Only purchase items if they are needed to get stars, such as skeleton keys.
- Stars should be purchased as much as possible.
- The group of 3 players in 1v3 minigames should win.