OpenTTD
Build and manage a transport network
An open-source RollerCoaster Tycoon 2 engine with modern features and multiplayer

OpenRCT2 is an open-source version of the RollerCoaster Tycoon 2 engine for building and managing amusement parks. Players arrange attractions, shops, and facilities while balancing finances and guest satisfaction. Scenario objectives provide structured challenges, while sandbox play allows more flexible building with optional restrictions.
The project adds cooperative multiplayer, interface improvements, editing tools, and support for modern systems. It requires separate original game assets from RollerCoaster Tycoon 2 or RCT Classic. Existing owners can use those files with the engine to revisit scenarios or build a shared park, with community-maintained improvements extending the original game experience.
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