
COMMUNITY INTEGRATION
Once Upon a KatamariArchipelago randomizer mod
Explore independently unlocked levels, roll up cousins, presents and crowns, and gather Planets for the finale. Optional collection checks reward either specific objects or unique-object milestones.
Maintained by ItsSeafoamy
- Reviewed build
- 0.3.0
- OS
- Windows, Linux / Proton
- Last reviewed
- 13 Oct 2026
- Installation
- Manual installation
How the game changes
- Default settings provide 297 checks across 48 levels: clears, 69 cousins, 39 presents and 141 crowns. Planet rewards on clears are an optional fixed local category.
- Collectionsanity offers either 3,637 eligible individual objects or configurable milestones. The full catalogue lists both possibilities separately; they are never enabled together.
- 173 possible reward identities include level and cousin unlocks, cosmetic presents, Planets, Stardust, regular and super freebies, and three traps. No progressive item chains are defined.
- Gather Planets to unlock That Hole..., then plug the hole. Easy Finale is enabled in the plugin by default and is assumed by the World’s logic.
Before you start
- Use the matching v0.3.0 APWorld and plugin. The World requires Archipelago 0.6.7; the client advertises protocol version 0.6.6. The documented loader is BepInEx 6 IL2CPP build 783. Unix support is described through Wine/Proton, without an independent runtime test here.
- A catalogue entry is not a promise of inclusion: level exclusions, Skip Tutorial, collection mode and milestone settings change checks. The collection modes are mutually exclusive. Forced local Stardust checks cannot hold progression.
- When clear Planets are enabled, the percentage-goal denominator adds non-starting level unlocks rather than all fixed Planet checks. With defaults this computes 73 required from a modeled 122, although 128 Planets are placed across the pool and clear checks.
- Limited reward space reduces requested pool Planets first and can then omit cousin/present cosmetics. Starting levels and the starting cousin are randomly selected.
- The native client has no reconnect path without restarting the game. Keep Easy Finale on and start a fresh save. Displayed level positions can be displaced; the maintainer documents selecting their intended location or reloading the scene. No full playthrough or native rebuild was performed.