Quote MINIMUM:

OS: SteamOS (64-bit)

Processor: 2.3 Ghz Core i5 or AMD equivalent

Memory: 4 GB RAM

Graphics: Dedicated video card with 1 GB of RAM (or above)

Hard Drive: 10 GB available space

Additional Notes: Subject to Change

Article taken from GamingOnLinux.com.

In a move that I imagine will make a lot of people happy, it seems RollerCoaster Tycoon World will support Linux at launch!(Official)RollerCoaster Tycoon World™ is the newest installment in the legendary RCT franchise. This next-generation theme park simulation and building game includes fan-favorite features and incredible new advancements such as stunning 3D environments full of roller coaster thrills, exciting flat rides, eager guests, user-generated content, robust social features, and more – all in one massively fun game!The feature list on Steam is pretty big too with things like Steam Workshop support, the ability to ride the roller-coasters yourself, and more.I will be interested to see some real gameplay, and not a teaser trailer, but consider me hyped.They have included SteamOS + Linux specifications on their page now:It's also now confirmed as a platform on their website! So this isn't some sort of error, and it seems to be a Unity title, so it's not surprising.It's due for release in "Q4 2015".