Acclaimed 2D iPhone platformer Soosiz is free today thanks to the FreeAppADay initiative.

Soosiz sees you helping a cute little blob of a character save the world by jumping on, under, and around things.

It's attracted a lot of positive reviews, including a Pocket Gamer Silver Award, and is considered by some to be the best iPhone platform game thanks to its cunning Mario Galaxy-style gravity defying gameplay.

This 1.2 version of the game comes with iOS 4 and multitasking support.

Soosiz is available on the App Store now.