The Developer Chests are Chests that are able to be opened with a BloxByte Key, obtained from the Final Boss. Each chest is based of one 1 of the 5 Developers, each with a special room. The chests contains Legendaries, Godlies, Mythicals, and Corrupted Pets and Hoverboards and also a very rare Classified Pet.
The following chances are unofficial and purely speculation.
| Legendary | Godly | Mythical | Corrupted | Classified |
|---|---|---|---|---|
| 50% | 30% | 15% | 5% | Around 0.1% |
| Pet | Board | |||
| 45% | 55% |
CovenK's Chest[]

| Rarity | Pet | Board |
|---|---|---|
| Legendary | Shox | Light |
| Godly | Scoops | SUNRIDER |
| Mythical | Tato | Luna |
| Corrupted | CovenK (Pet) | CovenK (Board) |
| Classified | Spiritfly | N/A |
Goro7's Chest[]

| Rarity | Pet | Board |
|---|---|---|
| Legendary | Lucha Chonks | Fire |
| Godly | Plasma | USB |
| Mythical | Technoscore | Drifty |
| Corrupted | goro7 | Goro7 |
| Classified | Pyrus | N/A |
Didi1147's Chest[]

| Rarity | Pet | Board |
|---|---|---|
| Legendary | Bombastic | Air |
| Godly | Jaspar | Sunrise |
| Mythical | Mr Fuzz | Phoenix |
| Corrupted | didi1147 | Didi |
| Classified | Exoplanet | N/A |
Thexz's Chest[]

| Rarity | Pet | Board |
|---|---|---|
| Legendary | Goggles | Water |
| Godly | Airhead | Nub |
| Mythical | Loremaster | Flash |
| Corrupted | Thexz (Pet) | Thexz (Board) |
| Classified | Static Phase | N/A |
MakkieMon's Chest[]

| Rarity | Pet | Board |
|---|---|---|
| Legendary | Phil | Earth |
| Godly | Krepy Cat | DIAMONDZ |
| Mythical | Colorblaster | Dia |
| Corrupted | MakkieMon (Pet) | MakkieMon (Board) |
| Classified | Euphoria | N/A |
Mini Final Chest[]

Opening this Chest guarantees a Corrupted rarity pet: Mini Final
| Rarity | Pet |
|---|---|
| Corrupted | Mini Final |
Trivia[]
- It is said that Goro7 had accepted almost 30+ concepts from the official BloxByte Games Discord Server, which were used for the items in these Chests.
- The Classifieds from these Chests were the only Classifieds to be listed in the Journal. This was changed in update v(?)