List of Underworld Realm codes
- 3Mvisits – 30 key boxes, ten soul orbs, ten candy coins, and 1,000 gold
- IAmVoid – 30 minutes of 2x drop chance and 30 minutes of 2x XP
- 2Mvisits – 15 key boxes, 20 soul orbs, ten candy coins, and 1,000 gold
- BaNAnA – ten minutes of 2x drop chance
- Rainbow – 30 minutes of 2x XP
- Update1Snowdin – 20 minutes of 2x XP, 30 minutes of 2x drop chance, and five candy coins
- Christmas – 15 candy coins and 15 key boxes
- 15KLikes – 20 soul orbs and five key boxes
- Chicken – five soul orbs, 55 gold, and ten minutes of 2x XP