1. Dark mode has been suggested.
2. Roulette already does this. Make sure Auto Run is set.
3. !startarena <mode> <amount> Mode 1 is Knockout Arena, where <amount> is the max wager, and Mode 2 is Tournament Arena, where <amount> is the entry cost into the tournament. (e.g. !startarena 1 100) [Mod Level 2 Only]
4. These games can be created via custom commands.