A (?) denotes version's info here is guess-work, possibly incorrect.
| Version | Release date | ||||
|---|---|---|---|---|---|
| Android | iOS | Fire OS | Windows Phone | Windows 10 | |
| Pre-release | — | — | — | — | — |
| Alpha 0.1.0 (Xperia PLAY only) | August 16, 2011 | — | — | — | — |
| Alpha 0.1.1 | October 7, 2011 | — | — | — | — |
| Alpha 0.1.2 | October 13, 2011 | November 17, 2011 | — | — | — |
| Alpha 0.1.3 | December 3, 2011 | December 14, 2011 | — | — | — |
| Alpha 0.2.0 | February 11, 2012 | February 17, 2012 | — | — | — |
| Alpha 0.2.1 | March 14, 2012 | March 14, 2012 | — | — | — |
| Alpha 0.2.1 alpha 2 | March 17, 2012 | — | — | — | — |