Cut the Rope has been a popular paid game (99 cents for the iPhone version, $1.99 for the iPad) on the iPhone and iPad. It is now available for free (advertisement supported) exclusively at GetJar.
Cut the Rope Free (GetJar app store)
I took a quick look at the Android Market and Amazon AppStore to confirm that the game is not available from either source.
Cut the Rope is an addictive, physics-based game that appeals to all ages. Om Nom, the adorable and ravenous little green monster, has one passion – candy! Players must cut an increasingly complicated series of ropes to release candy into the mouth of Om Nom, while capturing a series of stars on the way down, in this highly innovative and stimulating puzzle game that combines outstanding physics, 175 tricky levels, and fun, colorful, high-definition visuals.
You may not have heard of GetJar. However, it is one of the oldest mobile app stores still in business. It was found in Lithuania in 2004 and claims to have had nearly 2 billion downloads so far. It distributes apps for Android, BlackBerry, Windows Mobile (not Windows Phone) and Symbian.
Video courtesy of ZeptoLab