A user named "TheBirbsWord" released a Roblox game called "Merge!" on January 24th, 2021. The goal is to merge two of the same balls to make a bigger ball, this process continues up until the twentieth and last ball is obtained. However five final balls were added and players would end up pushing this game to it's limit.

Merge! Classic (with Ball 25): https://www.roblox.com/games/6290127827
New Merge! (recently added Ball 25): https://www.roblox.com/games/11411653820
Ball index: https://www.mediafire.com/file/0mguul...
Thumbnail by ‪@glowblock64‬