PanludiaBarrows Ceiling Incendiary Essence
DefaultReach the Incendiary Essence pickup in Barrows Ceiling to send this check.
COMMUNITY INTEGRATION
Rusted MossArchipelago randomizer mod
Explore with randomized grapple upgrades, weapons, trinkets and Titania pieces. Pickups send multiworld checks while incoming items rebuild your movement and combat toolkit.
Maintained by dgrossmann144
GAME MECHANICS
Explore game mechanics
Browse possible checks, rewards and settings. What appears in your game depends on your World options.
The released item table defines 104 pickup candidates. During generation the World removes four pickups from content added in the Major Content and Winter updates, leaving 100 active checks across 11 base-game regions. Four corresponding DLC item definitions are also removed. The Chest item remains registered but has no pickup location and creates zero copies. Location IDs retain their original gaps. These are static source-table counts; no seed generation or in-game session was performed.
Actions and milestones that can send a check to your multiworld.
100 locations
Ichor Refinery Tattered Blindfold
DefaultReach the Tattered Blindfold pickup in Ichor Refinery to send this check.
Factory Roof Giant Chambers
DefaultReach the Giant Chambers pickup in Factory Roof to send this check.
Factory Roof Magnet
DefaultReach the Magnet pickup in Factory Roof to send this check.
Mountainside Ruby Slippers
DefaultReach the Ruby Slippers pickup in Mountainside to send this check.
Elfame Fairy Ointment
DefaultReach the Fairy Ointment pickup in Elfame to send this check.
Mountainside Energy Refiner
DefaultReach the Energy Refiner pickup in Mountainside to send this check.
Living Quarters Lucky Clover Pearl
DefaultReach the Lucky Clover Pearl pickup in Living Quarters to send this check.
Flatlands Time Manipulator
DefaultReach the Time Manipulator pickup in Flatlands to send this check.
Factory Roof Spiced Gunpowder
DefaultReach the Spiced Gunpowder pickup in Factory Roof to send this check.
Elfame Powdered Fae Silver
DefaultReach the Powdered Fae Silver pickup in Elfame to send this check.
Smoked Forest Sprite's Breath
DefaultReach the Sprite's Breath pickup in Smoked Forest to send this check.
Living Quarters Wing Clipper
DefaultReach the Wing Clipper pickup in Living Quarters to send this check.
Smoked Forest Powdered Nightshade
DefaultReach the Powdered Nightshade pickup in Smoked Forest to send this check.
Living Quarters Cracked Monocle
DefaultReach the Cracked Monocle pickup in Living Quarters to send this check.
Lake Magnetic Bullets
DefaultReach the Magnetic Bullets pickup in Lake to send this check.
Factory Roof Thorny Rose
DefaultReach the Thorny Rose pickup in Factory Roof to send this check.
Lab Rusted Coin
DefaultReach the Rusted Coin pickup in Lab to send this check.
Ichor Refinery Cleansing Charm
DefaultReach the Cleansing Charm pickup in Ichor Refinery to send this check.
Factory Roof Erosive Bullets
DefaultReach the Erosive Bullets pickup in Factory Roof to send this check.
Playing with others
Independent saves exchange items through Archipelago. The maintainer also documents same-slot co-op and compatibility with the separate Ghost Multiplayer mod; those combinations were not independently tested here.
Known scope and limitations
- Use APWorld v0.1.7-alpha with client mod v1.2.0. Install Rusted Moss Mod Manager first; its 1.4c package was inspected for this review. The integration guide reports Steam game 3.98 and Archipelago 0.6.4; newer combinations and the itch.io edition have not been independently verified.
- Install the APWorld in custom_worlds, edit the supplied YAML and generate/host the room. Enable the client through the mod manager, or use the guide’s manual ZIP installation route. Start a dedicated new save and enter the exact room address, slot and password. The maintainer primarily tested Speedrun mode.
- The maintainer documents incomplete cumulative-health, trinket-capacity and combat logic. Some routes assume rapid weapon switching. Major Content Update and Winter Update additions are not fully supported; optional Gimmick must be installed and selected manually.
- The client accepts broader ending sets than the required-ending setting suggests: goal A accepts A through D, goal B accepts B or C, and goal E accepts any ending. Goals C and D accept their respective ending. This differs from the World’s selected-event completion model.
- Keep backups and a separate save for each room. Checked locations are saved and resent on connection, but the sidecar save is keyed by file number without verified room identity or atomic coordination with the game save. Item replay also contains a weapon-reset inconsistency.
- Rail is used in access rules despite being classified useful, and alternate starting weapons are available. The hard-Maya option uses inconsistent field names between client paths. These static findings limit confidence in all option combinations.
- The password is stored in local JSON settings. Native TLS hostname verification was not established in this review. The optional mod manager downloads and replaces mods without comparing a trusted content hash or signature; manually installing the identified archive avoids that downloader path but does not resolve the remaining client limitations.
- World and client text files match identified source revisions after newline normalization, and the native DLL matches an official gm-apclientpp release. Client/loader license-notice coverage and a full native rebuild remain unverified. No proprietary game-asset bundle or game executable was identified in the inspected client and loader archives.