Indie developer Psyonix announces plans for OS X and SteamOS editions of Rocket League, saying these ports of the motorized sports game should arrive by the end of this year. "We're extremely excited about SteamOS and Mac," said Dave Hagewood, Founder and President of Psyonix. "Our PC players have already proven how much passion they have for our game, and this is a great opportunity for us to bring Rocket League to an even wider audience inside the Steam family." They celebrate the news with a 10% off sale on Steam, and of course the SteamOS and OS X editions will be part of that purchase when released. Here's more on the plan, which includes a free copy of the game with Steam Hardware preorders:

Rocket League, the popular and critically-acclaimed sports-action title from independent game developer, Psyonix, is one of the top games of the summer. Having sold more than 1 million copies via Steam since its release last month, Rocket League is now officially heading to the SteamOS and Mac platforms later this year. To prepare for the SteamOS launch, Psyonix and Valve are immediately offering Rocket League for free to those who pre-order (or have pre-ordered) any of the Steam Hardware devices (Steam Controller, Steam Link, or Steam Machine).

Rocket League brings players a high-powered hybrid of arcade-style soccer and vehicular mayhem. Offering easy-to-understand controls and fluid physics-driven gameplay, Rocket League boasts more than 10 billion possible garage customizations and multiple match settings. As one of the best-selling titles of the year, Rocket League is already one of the top titles featured in multiple eSports leagues throughout the world and has been one of the most watched games on YouTube and Twitch throughout the summer.