Brain Rush is a super simple to play and gets very addictive. Just hold or release the screen to shift to either a square or circle and match the incoming shapes. The higher your score, the faster they come!
I redesigned Brain Rush Game using Unity3D and you can access source code as a unity tutorial material at my Github account.
Technologies: Unity3D, C#
Github repository: https://github.com/mmirhoseini/brainrush