Giant Waifu Wash Simulator Wiki

A relaxing power-washing simulation with narrative choices in a Miami-inspired resort. Play as a cleaner when giant star Vellory arrives.

Steam-only single-player title — no redeem codes, no public Trello, no gacha tier lists.

Adults Only on Steam. This unofficial wiki covers mechanics, achievements, and locations.

• Genre: Casual, RPG, Simulation
• Platform: Steam (Windows)
• Developer / Publisher: Lewd Star
• Languages: 30 interface languages
• Achievements: 15 on Steam
• Estimated playtime: 4–8 hours for story + completionist exploration

Giant Waifu Wash Simulator launched on Steam on June 6, 2026. It is available exclusively on PC through Steam and supports Steam Achievements, Steam Cloud (where enabled), and full controller and keyboard support.

The title is marked Adults Only on Steam due to explicit mature content. Verify your Steam age settings and regional availability before purchase. Introductory discounts may appear around launch — check the store page for current pricing.

• Release date: June 6, 2026
• Store: Steam App ID 4719730
• Platform: Windows 10 or above
• Rating: Adults Only (Steam)
• Audio: English voice with multilingual subtitles/interface

Keyboard and mouse offer the most precise aim for small targets such as sunglasses or graffiti tags. Controller support mirrors the studio’s earlier washing prototype: left stick to move, right stick to look, trigger to spray, face button to jump and interact.

If a section feels sluggish, lower mouse sensitivity or increase controller look speed. For large surfaces, hold a steady distance and sweep horizontally rather than flicking the camera.

Tips

• Hold spray continuously on broad surfaces; tap or short bursts for delicate objects.
• Use interact prompts (E / A) when standing near story objects or tool stations.
• Pause with Esc or Start to review objectives without losing placement.

Power-washing games reward methodical coverage. Start from the top of walls and roofs, then work downward so dirty runoff does not ruin finished areas. On street segments, clear signage and benches first for quick progress before tackling large flat zones.

When Vellory-related tasks appear, read dialogue choices carefully — two achievements (Cold Attitude and Friendly Approach) track opposing relationship styles. You can replay days from the main menu to pursue the alternate branch.

Explore between mandatory jobs. Pier view, Basketball entertainment, and Premium Seating are exploration achievements that encourage wandering the resort map. Mark unfamiliar alleys and second-floor interiors such as the burger restaurant.

• Work top-to-bottom on vertical surfaces
• Prioritize story-critical objects (tribute wall, sunglasses) before free roam
• Revisit days for missable choice achievements
• Scan the map edges for viewpoint and seating secrets
• Upgrade tool familiarity before chasing 100% completion

Story progress achievements unlock automatically when you complete each day. Choice achievements require consistent dialogue tone: Cold Attitude means playing detached, while Friendly Approach rewards open warmth toward Vellory.

Task achievements such as Crystal Clear and Tribute to the giantess are missable if you skip optional objectives during the relevant scene. Complete cleaning tasks before advancing the day timer when unsure.

The narrative unfolds across six days in a sun-soaked resort city. Early days establish your reputation as a reliable cleaner; mid-game introduces Vellory’s demands and the tension between professional duty and personal curiosity.

Choices are subtle rather than heavy-handed. Dialogue tone and optional interactions steer whether you earn Cold Attitude or Friendly Approach. Both paths remain playable without harsh penalties, but achievement hunters need separate runs or chapter replay.

Side activities — causing Splash Panic chaos with water power, restoring the vandalized tribute, or cleaning Vellory’s sunglasses — reinforce the fantasy that your work visibly shapes the world around the giant star.

• Day 1–6: linear story spine with optional detours
• Relationship branch: cool vs. friendly dialogue
• No multiple ending slideshow — outcomes reflect tone and scene variations
• Replay from day select for achievement cleanup

The cast is intentionally small, keeping focus on the cleaner–celebrity dynamic. NPC tourists and townsfolk populate the resort but do not carry deep quest lines.

Resort Streets form the hub loop for most cleaning contracts. The Pier viewpoint sits on the waterfront and unlocks the Pier view achievement when you reach the lookout. The Burger Place spans two floors — Premium Seating is on the upper level overlooking the promenade.

The Basketball Court hosts casual ambient content tied to Basketball entertainment. The Giantess Tribute Wall appears during a story beat where vandalism must be fixed before Vellory’s arrival (Tribute to the giantess achievement).

Your toolkit centers on a power washer with interchangeable nozzles or modes. Wide spray covers streets and plaza tiles; detail settings handle sunglasses, posters, and graffiti.

The restoration kit appears during tribute repair segments — interact with damaged surfaces until the progress meter completes. No inventory-heavy crafting loop exists; tools are contextually available at job sites.

• Power Washer — primary surface cleaning
• Detail Sprayer — precision targets and small objects
• Restoration Kit — repair vandalized tribute displays

Lewd Star lists 16 GB RAM as the minimum, which is higher than many indie sims — close background apps before playing on low-memory systems. A DirectX-compatible GPU is required; integrated graphics may work at reduced settings.

Track official patches through the Steam news hub for App 4719730. This wiki last reviewed store data and achievement lists after the June 2026 launch window.

Future updates may add quality-of-life controls, additional languages, or bonus scenes. Report factual errors via community channels; we will revise sections when confirmed.