I want to recommend the game Ghost for Android. It is a portal influenced puzzle game that has a new innovative gameplay concept where you use your past lifes to solve puzzles. You can also challenge your friends to play and see who can get the best score on each level. It's free and can be downloaded on Android market: https://market.android.com/details?i...ind.ghost.free
[FREE GAME] Ghost, portal influenced puzzle game-screenshot2.png