Kokoromi Collective today announced the theme of the next Gamma showcase to be on display at GDC 2010 in San Francisco. Titled 'One-Button Games', Kokoromi are now calling for budding developers to have a crack at creating a short gaming experience suitable for display on a show floor, which uses only one button.

Selected games will be shown at a party after the end of the Independent Game Summit in March 2010, and then given a dedicated booth on the GDC Expo floor. Winners will also receive a free, all-access pass to the GDC event. All rather nice!

If you're planning on entering, make sure you check out the official announcement - there are a bunch of rules you'll need to stick to. It's going to be really interesting to see what kind of stuff comes out of this - as we've seen in the past, being limited to a single button does not have to limit gameplay at all.

Details on how to submit your work will be released in January.