Following the example set by the very successful pay-what-you-want World of Goo sale, Crayon Physics Deluxe creator has dropped the price of his physics puzzle game to the low, low, price of whatever. To celebrate his birthday, Kloonigames' Petri Purho has instituted a "pay what you want" sale through January 15.

It's up to you, then, whether you follow the example of the guy who paid $150 for World of Goo, or of the jerks who paid a penny. We might suggest that paying a penny for the game that he worked on for years is a pretty crummy birthday present to give Purho. Try the demo first -- it's actually free.

[Via VG247]

This article was originally published on Joystiq.

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