OpenRCT2

What OpenRCT2 is

OpenRCT2 is a from-scratch reimplementation of the RollerCoaster Tycoon 2 engine. It reads the original game's data files and runs the same parks, scenarios and save files, but it is not a patch: it is a new program with its own installer, its own renderer and a decade of accumulated fixes. The Windows build installs to a normal folder and can also be downloaded as a portable archive if you prefer to keep everything in one directory.

Because the reimplementation is open source, the feature list has grown well beyond what the 2002 release offered. Multiplayer is the headline addition: several players can build in the same park at the same time over a network, with permissions controlling who may terraform, demolish or edit the park rating. Alongside that come new ride types, adjustable ride and stall prices, faster pathfinding for guests, a title-sequence editor, a track designer that can be used outside a park, and a plugin API that runs JavaScript mods.

What playing and building look like

The first run asks for the folder holding your RollerCoaster Tycoon 2 installation. OpenRCT2 copies nothing from it, so the original game stays intact and can still be launched as before. If you own the first RollerCoaster Tycoon and its expansions, OpenRCT2 can also use those assets, which unlocks some scenario and object combinations. After that, the main menu offers the standard scenario list, a scenario editor, the track designer and a server browser for multiplayer.

In a park, the interface keeps the familiar top toolbar but adds an options window that is far more granular than the original. Cheats are built in and clearly separated from normal play, which is convenient for testing a layout quickly. The map window shows guest and staff statistics in more detail, and the object selection window lets you import custom scenery and rides from the community without editing config files by hand.

Rendering benefits from modern hardware. A software renderer is available for exactness, while the hardware renderer scales the view smoothly and supports higher resolutions, so large parks stay readable on a 1440p or 4K display. Save files remain compatible with the original format, which means parks can move both ways, though features added by OpenRCT2 are lost if you save back to the original game.

Settings, plugins and limits

The options window covers display scaling, sound and music volume, interface behaviour, autosave intervals and network settings. Autosave is worth enabling before you experiment with large terraforming changes. Server hosting for multiplayer runs from the same executable and accepts a port and a player limit, with a whitelist and permission groups for regular groups of players.

The plugin API is a genuine strength. Plugins are single JavaScript files placed in a folder, and they can add menu items, react to game events and draw overlays. The community has produced tools for park statistics, ride synchronisation and quality-of-life tweaks, and writing a simple plugin requires no build toolchain.

The limits are legal and technical. You must own RollerCoaster Tycoon 2, and the project deliberately ships no assets. Some original scenarios and ride behaviours depend on data files whose format is only partly documented, so obscure custom content may render incorrectly. Multiplayer requires the host to be reachable, which may need port forwarding on a home network.

Who should choose something else

If you do not own the original game, OpenRCT2 cannot help you, and buying the game only to use this is a decision about the game rather than the tool. If you want a park builder with no legacy constraints, Planet Coaster and Parkitect are modern commercial alternatives. For players who already have RollerCoaster Tycoon 2 on a shelf, however, OpenRCT2 is effectively a free remaster that also happens to support cooperative building.