Puzzle game Happy Hills is now free for iOS users. Players can add more levels for $.99.

From the press release:

    Dreamfab, the premium mobile game publisher, and developer Chimera Entertainment today released a free version of Happy Hills, the joyful physics-based puzzle game for iPhone™, iPod™ touch, and iPad™. Happy Hills reached the Top 10 in the US App Store on its first day and players can now download Happy Hills Free to get a taste of the happiness!

    Happy Hills Free lets players take a peek into the new high score system which includes online leaderboards for each level pack. Players can also switch between Game Center and OpenFeint with the touch of a button. And just for downloading the app, each player will receive 4 free stages in each level pack, making for 12 free stages total!

    Want more? Players can then purchase the level packs with an additional 44 stages each for just $0.99 / €0.79 / £0.59 per level pack.
    Features:
    • Six block types total with different physical properties
    • A wide variety of exciting level elements like fire, water, wind, chasms, chains, moving platforms and trampolines guarantees loads of brain-teasing fun
    • Extra Happy Bombs available as an IAP to permanently give you more bombs for just $0.99 / €0.79 / £0.59
    • Stuck on a level? Take advantage of the new Level Skip Rainbows that are available in packs of three for $0.99 / €0.79 / £0.59
    • Online Achievements with OpenFeint and Game Center support
    • Intuitive touch controls—easy to play, hard to master!
    • Universal app for iPhone™, iPod™ touch and iPad™
    • Retina Display support

    Note: Due to memory requirements, Happy Hills Free will only run on iPhone 3GS and iPod touch 3G (32GB) or later. First and second-generation devices are not supported.