Combine tiles to reach higher levels. Tweet
How to play: Use your arrow keys to move the tiles. When two tiles with the same number touch, they merge into one!
Note: This site is the official version of Get Caltech; IDK whether it works on phones or not. All other apps or sites are derivatives or fakes, and should be used with caution.
Modified by Naveen Arun. Based on 1024 by Veewo Studio and conceptually similar to Threes by Asher Vollmer.