OpenZT2

An open-source reconstruction of
the classic zoo sim.

New alpha out now.
Join the Discord to
follow our progress!

Photo by MF217 O: Original game. This screenshot was captured in Zoo Tycoon 2.

Development

OpenZT2 is available as an alpha download for Windows, Linux and macOS. Try this early build and report problems on GitHub. The source code is at overyonder/openzt2, with build instructions for each platform and a contributing guide if you’d like to send changes. We post longer write-ups in the devblog.

Features added in OpenZT2

  • Mod hot reloads

    Reload mods from the main menu without restarting the game or moving files around.

  • Redo

    Press Ctrl+Y to reverse an accidental undo.

  • 64-bit platform

    Native 64-bit builds for Windows, Linux and macOS.

  • Modern shader pipeline

    The game’s original shader effects are translated to run on a modern renderer, so the zoo keeps its original look. How it works

Getting started

  1. Get OpenZT2

    Download the alpha release for your platform.

  2. Select your game files

    Point OpenZT2 to your Zoo Tycoon 2: Ultimate Collection files.

  3. Start playing

    Launch the game and start building your zoo.

Made for players
and creators

OpenZT2 is built to be modded, and mods reload from the main menu while you work. The game’s source is open too, if you’d like to change the game itself.

Photo by MF217 O: Original game. This screenshot was captured in Zoo Tycoon 2. Two giant pandas playing in their exhibit as visitors watch in Zoo Tycoon 2.

Help OpenZT2 grow

Talk about the game and follow development on Discord, or help build it on GitHub.

A gorilla beside a carved stone shelter in Zoo Tycoon 2. Photo by MF217 O: Original game. This screenshot was captured in Zoo Tycoon 2.