The other two games in this series, Cut the Rope and Cut the Rope: Experiments, both became bestsellers on the App Store and won multiple gaming awards. ZeptoLab's most recent game, Pudding Monsters, was less successful.
Our sister-site TouchArcade has this to say about the Cut the Rope games:
If you're not familiar, the gameplay mechanic of Cut the Rope hinges around solving physics puzzles to feed the above adorable monster candy. Both Cut the Rope proper as well as Experiments should be on your phone (or iPad), if they aren't already.