Ancient Observatory

v2.1.0·Updated 2026-09-28

An alternate Stage 5 map set in a dormant observatory, resting high above the planet's surface. Includes a Simulacrum variant and music by Jared Damron!

Screenshots 3 screenshots

About this mod Author’s original text

Ancient Observatory

An alternate Stage 5 environment set in a dormant celestial observatory, overgrown with glowing plants that sort of resemble the starry night sky.

It's a wide and expansive map with rolling hills, cliffs and large multi-layered buildings to navigate. There are launch pads scattered throughout to help with getting around.

Simulacrum

There is also a Void replication of Ancient Observatory with some (very) minor changes, exclusive to SotV's Simulacrum gamemode.

Music

Ancient Observatory has a unique music track, 'Orb Knowledge', created for the stage by Jared Damron (@FakeBees on Discord)!! You can find it, as well as his other work, on his YouTube channel!

Other Features

  • Config options
  • Ancient Observatory can appear (true/false)
  • Ancient Observatory - map lighting (Night, Day, Night After Looping, Day After Looping, Random)
  • Simulacrum variant can appear (true/false)
  • Simulacrum variant can appear as Stage 1 (true/false)
  • Toggles for modded enemies
  • Some modded enemies can appear if their respective mod is enabled
  • EnemiesReturns: Swift, Colossus
  • Sandswept: Cannonball Jellyfish
  • Starstorm 2: Security Chest
  • ForgottenRelics: Brass Monolith
  • Ancient Wisp
  • Orb

Bugs / Issues

Please let me know on GitHub and/or Discord (@worms / @ry6240) if you encounter any issues with the map. Also feel free to message me if you have suggestions or other feedback!

Install & use Install: BepInEx plugin

  1. The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
  2. Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
  3. Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
  4. Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.

Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file.

Dependencies

Install these first, or the mod will not work:

Smooth_Salad-ShaderSwapperRiskofThunder-R2API_SoundRiskofThunder-R2API_StagesRiskofThunder-R2API_ContentManagementRiskofThunder-HookGenPatcherRiskofThunder-R2API_PrefabRiskofThunder-R2API_CoreRiskofThunder-R2API_Director

File & checksum

Filename
Ancient_Observatory-2.1.0.zip
File size
32.5 MiB