Threes!

Threes! is a that was created by Asher Vollmer and published  by Sirvo LLC for iOS, iPadOS, and macOS (Apple Silicon only).

Gameplay
The player can slide card tiles with numbers to combine their value and then match up increasing multiples of 3. Threes! received wide acclaim and won an Apple Design Award in 2014. However, its gameplay has been copied by other puzzle games, such as 1024! and 2048.

Releases
Threes! was first released for iOS on February 6, 2014. It was released for Android on April 3 and for on December 5 of that year. Versions for and web browsers were released on April 27 and December 17, 2015, respectively.

Apple Arcade version
A variant for Apple Arcade was released under the title Threes!+ on April 2, 2021.

System requirements

 * iOS 10 or later (13.0 for Apple Arcade)
 * iPadOS 13 or later (for Apple Arcade)
 * macOS 11 or later (Apple Silicon only)