mod
Alton Towers Project Horizon Challenge
Welcome to the Alton Towers Project Horizon Challenge, where you have the chance to WIN a HUGE prize by building a ride inside the building which will hold Alton Towers' huge investment in 2025. This challenge is the toughest one yet, being only a small warehouse building space to build the coast...
- Latest version
- no release indexed
- Downloads
- 1.8k
- Rating
- 40
- Updated
- 4 y ago
- Available on
- Steam Workshop
Download
Delivered through the Steam client, not a file this page can link to.
Frequently asked
How do I install Alton Towers Project Horizon Challenge?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Planet Coaster all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download Alton Towers Project Horizon Challenge safely?
From the author's own page on Steam Workshop, which is where the data here is synced from. IndexGG never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.
Which Planet Coaster versions does Alton Towers Project Horizon Challenge work on?
The author has not declared a supported version in the metadata we sync, so there is nothing here we can state as fact. Check the project's own page before installing it, and treat an old mod with no declared version as untested on modern Planet Coaster.