Note, this game requires a Steam account in order to activate/play.
Editor's Notes & Price Research
Checkout some previews of RollerCoaster Tycoon World at GameSpot. -Corwin
RollerCoaster Tycoon World is the newest installment in the legendary RCT franchise. Includes theme park simulation and building w/ new advancements. This title was just release today (March 30, 2016) - Discombobulated
RollerCoaster Tycoon World releases tomorrow and cdkeys.com has it for $19.66 which is over $30 off retail.
Game looks to be pretty good, but still is in early access. The purchase is for a steam activation key.