Moldwasher Wiki
Your complete guide to the cozy Steam cleaning simulator — walkthroughs, tools, collectibles, and verified video guides.
What Is Moldwasher?
Moldwasher is a cozy arcade-style cleaning simulator on Steam where you play as Nigiri, a brave sushi hero blasting mold from fridges, kitchens, garages, and beyond. Released June 23, 2026 by Rubel Games and Anshar Publishing, the game combines satisfying pressure-wash gameplay with pixel art charm, lo-fi beats, and wacky tools like flamethrowers and pickaxes. There is no traditional tutorial—this wiki fills that gap with verified guides and walkthroughs.
Watch the official release trailer and read feature breakdowns in our Moldwasher game overview and trailer .
New players should start with our beginner how-to-play guide .
Keyboard, controller, and Steam Deck bindings are documented in the full controls reference .
Stuck on a Mission?
The number one player frustration is missions stuck at 0% progress—almost always caused by using the wrong tool or missing a special step like the sink clog. Before replaying blindly, identify whether your obstacle needs water, fire, impact, or movement.
Use our interactive Tool Selector .
for instant recommendations, then read the stuck missions troubleshooting guide .
Sink at 0%? The sink clogged route walkthrough .
covers the mandatory clog step. Late-game dinner boss? See the dinner fight multi-tool guide .
Walkthrough and Mission Routes
Our walkthrough section maps every major mission phase from the opening home room through post-story cleanup. Follow the recommended tool-unlock route to minimize backtracking and FreshCash waste.
Browse the complete walkthrough hub .
starting with the early game opening walkthrough .
Farm money efficiently via the garage FreshCash farming loop .
Pair written routes with our full game video walkthrough guide .
Tools and Upgrade Order
Moldwasher gives you four distinct tools: pressure washer, leaf blower, pickaxe, and flamethrower. Each solves specific obstacle types. Unlock all tools before maxing upgrades—breadth beats depth early on.
Compare all tools in the Moldwasher tools guide hub .
Follow the optimal tool upgrade order .
Master wide spray vs precise stream in the pressure washer spray modes guide .
Reduce mold stress with Zen Mode regrowth settings .
Collectibles and 100% Completion
Hidden drops, stickers, toys, CDs, cassettes, and gachapon decorations feed into 27 achievements—including the rare Gamer Brain trophy at roughly 3% global completion. Check hidden drop counters after every mission.
Watch and read the all collectibles video guide .
Hunt secret drops with the hidden objects location guide .
Spend mission coins via the gachapon coin spending guide .
Track progress on the full 27 achievements list .
Locations and Tips
From fridge shelves at sushi scale to late-game sewers and air ducts, each Moldwasher location introduces new mechanics. Combine location guides with tips for Zen Mode, money farming, and Steam Deck play.
Start in the fridge and freezer location guide .
Prepare for late-game areas overview .
Earn currency faster with FreshCash farming tips .
details. The garage money farming location .