Giant Waifu Wash Simulator is a relaxing giantess cleaning and care simulation game made and published by Lewd Star. It was released on Steam on June 6, 2026.

Story

You play as a professional city cleaner in a bright coastal resort town. Your routine changes when a massive giant superstar named Vellory arrives. The game follows your work cleaning the city and serving her, while building a relationship through daily interactions and choices.

Gameplay

The core gameplay is a relaxing power-washing simulator with sandbox and narrative elements:

• Use high-pressure washers, foam sprayers, brushes, and other tools to clean streets, buildings, and Vellory herself.
• Complete daily cleaning jobs and special requests.
• Physics-based cleaning with realistic water, suds, and dirt removal.
• Explore the resort town and handle unexpected events caused by the giant visitor.
• Make narrative choices that shape how things unfold.

Adult content

This game includes adult material focused on giantess themes. It features full nudity, close-up body washing (including intimate areas), size difference interactions, soapy body play, physical contact, voice acting with moans, and affectionate/sexual dialogue. Content is consensual and centers on the relationship with the single giant character, Vellory.