Heart'n Block Demo
You can play a little demo of the game directly on the site! It contains the first 25 stages to get a good feel of the game.
For best experience, play the demo on a PC with a processor of at least 1.6 GHz and around 1 Gb of RAM to spare.
Having trouble? I recommend using Firefox.
The demo work on a mobile device and tablet if it is enough powerful but I don't guaranty the 60fps!