The Humble Store is currently running their Summer Sale, and our favorite game is available now for 75% off (with Steam key for Windows/Mac/Linux)!
As with all purchases from Humble, a percentage of your purchase price goes to charity (as selected by you).
The current price is only available for about another day and a half, so don't wait on this deal!.
UPDATE AGAIN: Back to 75% off for the remainder of the sale!
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