Keeping with their Humble Indie Bundle promise, Cryptic Sea has released the source code for their award winning platformer Gish, which can be downloaded here.

The dev notes “Most of this code was hacked in in the last 3 or 4 months of development, so it’s not very clean,” but that shouldn’t hold modders back from jumping in and coming up with some interesting alterations.

Four of the developers participating in the HIB agreed to release their game’s source code if the goal of $1 million in sales was reached, when the dust finally settled $1.27 million was the figure and the devs have been following through one by one since. So far, Lugaru and Penumbra Overture have already gone open source and now with the release of Gish’s code we’re just waiting on the excellent Aquaria’s release which should be soon.