The Leadwerks Game Player is now on Greenlight. This is a standalone application any Steam user can install for free. You can publish your Lua games made in Leadwerks to the game player, so other Steam users can play your game.
The recent Winter Games Tournament has resulted in a lot of new games, many of which you can download and play right now, on Linux and Windows. The game player will allow free self-publishing of Lua games to Steam Workshop. This will allow you to safely download and play games other Steam users make, without any worries about viruses or malicious programs.
If you're a game developer, Leadwerks Game Player allows you to reach a broad audience and start building a fan base made up of your future customers. You can get feedback and communicate with fans on your own Steam Workshop page.
Leadwerks Game Player works with SteamOS, so you can use it to publish your own games to the living room and play on your Steam Machine game console.
You can vote for the Leadwerks Game Player on Steam here.