The Royal Chest in Bubble Gum Simulator Infinity spawns randomly on temporary Golden Chest Rift Islands in the Overworld. These islands appear high above the Overworld and last for about 10 minutes before despawning

. The Royal Chest itself is found on small floating islands that are usually pink or white with purple crystals, making them visually distinct

. To find the Royal Chest:

• Teleport to the highest island you have unlocked, commonly Zen Island.
• From there, jump or free-fall down while keeping an eye out for the Royal Chest on the small floating islands below.
• If you don't see the Royal Chest on your current server, leave and join another server, then repeat the process. This method increases your chances since the chest has a very low spawn rate (about 1 in 100 or 1 in 200 chance)

Once you find the Royal Chest, you need a Royal Key to open it, which can be purchased from the Alien Merchant on Zen Island for 3,000 Gems

. The chest contains valuable rewards including potions and rare pets like the Hacker Prism. In summary, the Royal Chest is located on rare temporary floating islands above the Overworld, especially around the Zen Island area, and requires server hopping and careful observation to find due to its rarity and short spawn duration