Terry Cavanagh's gravity-flipping platformer VVVVV is celebrating its 10th anniversary, and to mark the occasion, Cavanagh has decided to open source it. The news was revealed at today's AGDQ, and you can now get the source code via GitHub. It's tricky, but by no means cruel. You can turn off death altogether if you need to, and there are plenty of checkpoints.

Both desktop and mobile source code are available, and Cavanagh provides some notes to accompany them.

"Just by peeking at the source code, you can quickly see that VVVVV is not a technically sophisticated game! It's kind of a mess, even by the standards of a self-taught indie developer," he warns. I don't know about him, but it's equally indecipherable to me.

"I was young and more interested in getting something on the screen than in implementing it properly," he writes.

"Perhaps the best thing about the VVVVV source code is that it proves you don't have to be a programmer to hack it.

Check out the notes on Cavanaugh's blog.

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