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

THE PRACTICAL GUIDE

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

Helle's Undersea City Project - Bringing Air to The Garden - Grow and expand the land with air, aiming to rebuild the undersea city with a lone girl, Hele! A new type of undersea city-building simulation game!

Steam ↗Windows
GameWiki Pro EditorialReviewed 5 guide topics

GET YOUR BEARINGS

Plan your next Helle's Undersea City Project - Bringing Air to The Garden session

Our guide helps you compare the core systems of Hele's Undersea City Project, offering observations that let you plan efficiently without relying on hidden mechanics. By examining air production, building placement, exploration, research, and narrative elements, you can shape a thriving underwater settlement while enjoying the game's charming characters and story.

01 / THE GUIDE

Air Supply Balance

Compare the supply range and air‑cylinder accumulation of different Mira Flower types. Note which combinations keep air levels stable as you expand, and adjust planting locations accordingly.

  • Observe which Mira Flower types give the highest supply range for your map layout.
  • Balance planting multiple flower types to maintain steady air flow as you expand.

02 / THE GUIDE

Road Network Planning

Sketch a basic road layout before placing buildings. Observe how early road connections reduce later re‑routing and keep all structures powered by air.

  • Prioritize road connections early to avoid later re‑routing.
  • Place dwellings near air sources to keep residents supplied.
Helle's Undersea City Project - Bringing Air to The Garden official gameplay screenshot
Publisher-provided gameplay image · Caro Builders

03 / THE GUIDE

Exploration Efficiency

Track payload upgrades versus HP/air upgrades on your boat. Identify which upgrade yields the most valuable items per trip for your current city stage.

  • Upgrade payload first to carry more items per trip.
  • Keep an eye on boat HP and air to avoid mission failure.

04 / THE GUIDE

Research Prioritization

List research items that unlock new building categories. Prioritize those that fill gaps in your current infrastructure, such as processing facilities for resource conversion.

  • Focus research on items that unlock new building categories.
  • Track which research unlocks tourist events for additional income.

05 / THE GUIDE

Character Interaction Impact

Record dialogue cues from resident dot‑pictures. Notice any hints they give about preferred building locations or resource needs, and use those clues to refine your city layout.

  • Engage with each resident to discover unique dialogue snippets.
  • Observe how character personalities influence building placement preferences.

WATCH THE GAME

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

Official trailers & gameplay

INSIDE THE WORLD

Screenshots & game images

5 official screenshots

IN THIS WIKI

Your reading checklist

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QUICK ANSWERS

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

What is the main resource needed for buildings to operate?

All buildings require a supply of air, which is generated by Mira Flowers planted on cultivated land.

How many difficulty levels does the game offer?

The game provides three difficulty settings: Easy, Normal, and Hard, catering to both newcomers and experienced city‑building players.

Can I upgrade exploration boats?

Yes, the boat’s HP, air, and payload can each be strengthened using money earned in the game.

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SOURCES & CREDITS

Official resources and further reading

Original editorial guidance. Game imagery and trailers are provided by the publisher through Steam. Media and reference links checked 2026-10-23. Game versions, supported platforms, and balance can change; consult the linked release notes for current details.