Helle's Undersea City Project - Bringing Air to The Garden

Undersea city builder where air supply determines how you expand

Caro Builders · Published by Emma Create · Released Oct 5, 2023

Reviews: Mostly Positive; 78% of 69
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 2 years ago; Dec 17, 2023
Minimum PC: 4 GB RAM · 0.5 GB disk; Full requirements

What is Helle's Undersea City Project - Bringing Air to The Garden?

A city-building simulation set on the ocean floor, where you help Hele Tokitsumi restore a deserted settlement. You cultivate and upgrade land, connect homes and resource facilities to roads, and plant air-producing Mira's Flowers to keep buildings running.

For you if...

+you enjoy pixel art and a calm building pace

Not for you if...

−you want to build cities together with other players

What players say

78% of 69 reviews are positive

Players praise the approachable city building, but some call for usability improvements.

Screenshots and trailer

Helle's Undersea City Project - Bringing Air to The Garden screenshot 1

Helle's Undersea City Project - Bringing Air to The Garden system requirements

Minimum: 4 GB RAM, 0.5 GB of disk space.

As published by the developer.

Can my PC run Helle's Undersea City Project - Bringing Air to The Garden?

The published requirements do not name a graphics card we can compare.

Set up my PC →

Minimum

OS: Windows 7 / 8 / 10 / 11
Processor: Intel Core i5
Memory: 4 GB RAM
Storage: 500 MB available space

Does Helle's Undersea City Project - Bringing Air to The Garden have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Helle's Undersea City Project - Bringing Air to The Garden run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 23
Steam features: Family Sharing
Languages: Text only: English, Simplified Chinese, Japanese, Traditional Chinese.

Does Helle's Undersea City Project - Bringing Air to The Garden use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam