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About Monster Mop Up
Monster Mop Up puts you in the Ministry of Monster Concealment as the newly appointed Custodian. Your duties combine cleaning, rescuing fluffy Ragamuffin companions, and managing a personal home that can be expanded and decorated.
The game runs on Windows and offers single‑player, multiplayer, online co‑op, and full controller support. Achievements, Steam Cloud, and Family Sharing are also listed features.
01 / THE GUIDE
Cleaning Mechanics
Each location is presented as a space that must be explored, cleaned, and cleared of messes. The description emphasizes leaving “no trace behind,” indicating that the core loop revolves around using tools to remove debris left by the Ragamuffins.
Mess types are described as “unique” and each has its own abilities, meaning the player must handle different kinds of waste in distinct ways to keep the area tidy for rescued companions.
- Observe the size and type of each mess before choosing a tool.
- Prioritize larger spills to reduce the total number of cleaning actions.
02 / THE GUIDE
Ragamuffin Rescue
Fluffy Ragamuffins are scattered throughout “the most unexpected places” in human environments, and the Custodian’s mission is to locate and return every one of them to their home.
The text notes that you must “catch them” and that mishandling can create additional mess, linking rescue directly to the cleaning loop.
- Check corners, under furniture, and hidden nooks where small creatures might hide.
- Move slowly when approaching a Ragamuffin to avoid creating extra mess.

03 / THE GUIDE
Gear Upgrades
The home includes a shop stocked with upgrades, allowing the Custodian to improve cleaning tools. Upgrades are presented as a way to become “the Custodian of the Month (or Year).”
While upgrades are purchasable, the description does not specify other acquisition methods, focusing the player’s progression on the in‑home shop.
- Review the shop inventory before each session to plan purchases.
- Consider upgrades that match the most common mess types you encounter.
04 / THE GUIDE
Home Decoration
Players can expand their living space and choose from “over 150+ furniture and decorative item choices,” turning the home into a sanctuary for both the Custodian and rescued Ragamuffins.
Decoration is framed as a creative activity separate from cleaning, allowing personal style while still serving as a base for upgrades and rescued companions.
- Leave open pathways to avoid blocking cleaning routes.
- Mix decorative themes to reflect your preferred aesthetic.
05 / THE GUIDE
Monsteropedia Collection
Every rescued Ragamuffin is recorded in a Monsteropedia that lists its name, age, and interests. This compendium grows as you rescue more companions.
Completing the Monsteropedia is presented as a goal, encouraging players to locate every Ragamuffin across the game’s varied locations.
- Use the Monsteropedia as a checklist to track which Ragamuffins you still need.
- Re‑visit previously cleared areas if the list shows missing entries.





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