Kongregate is a free online game portal. Rapid Blocks has been available on Kongregate since a while now but I haven't got the chance to tell you about it here. So you can now play both of the endless mode and levels mode from the web player, unlock achievements, view your stats and do everything you can on the mobile version. If you have a Kongregate account, your high scores will be submitted directly to the leaderboards.
Here's the link:
Kongregate.com
Have fun!