Guacamelee! Gold Edition is a Metroid-vania style action-platformer set in a magical Mexican inspired world. The game builds upon the classic open-world Metroid-vania style of games, by adding a strong melee combat component, a new dimension switching mechanic, and cooperative same-screen multiplayer for the entire story.
And with Steam Workshop, you can discover and install new skins for either of the two main players. Or, you can make your own custom skins and share them with the community.
The developers, DrinkBox Studios have created a handy guide
for getting started with creating your own skins, though you'll need a copy of Adobe Flash CS5.5 or later.
The game itself launches with a whole bunch of Steam features such as trading cards, achievements, leaderboards, cloud saves, and full controller support.
Plus, there's an extra special promotion running for the first week after release: Buy before August 15th
, save 10% AND get a free copy of Mutant Blobs Attack