Tripwire Interactive has announced the "Killing Floor Grindhouse" Custom Map Making Competition, partnering with Nvidia and Logitech, with $20,000 worth of prizes up for grabs.

The contest will run in two Waves. Wave 1 completes July 31st, 2009, with a First Prize of $5,000 for the winner, while the runners-up will get prizes including Nvidia graphics cards and Logitech goodies.

Wave 2 is the Big One, completing September 18, 2009. The Grand Prize will be $10,000. Yes, a full Ten Thousand Dollars for the winning entry! There will be more Nvidia graphics cards and Logitech goodies for runners-up in Wave 2.

More details on the contest for the zombie slaughtering title can be found at their site .