Double-Up description

Connect tiles to sum up to the last tile, doubling up its value. This sum is added to your score. Used tiles are replaced with either 1,2 or 4 (with 4 being the rarest).

Double-Up has addictive gameplay. Easy to learn but hard to master!

Features:
- Smooth, simple gameplay.
- Autosaves progress. Put it down and pick it up anywhere, anytime.
- Post highscores to online leaderboard (login as guest, with Facebook or with Google-account)
- You can post your score to your Facebook wall to notify friends (optional).