Not Lonely Up!

Set in a stylized anime version of Japan, a charming heroine climbs toward the sky in search of a lost heart-shaped balloon. With checkpoints, auto-saves, and unlockable outfits, you can progress at your own pace. Explore a mysterious world full of branching paths and breathtaking views.

At a glance

• Platform: Windows.
• Genres: Action, Adventure, Casual, Indie, Strategy.
• Release date: Jan 9, 2026.
• Steam user reviews: Positive (100% positive).
• Delivered as a Steam library entitlement — activation is handled by Steam.

Minimum

Recommended

System requirements as published by the developer on Steam.

Activate on Steam

• Open the offer above — it takes you to this game's official Steam store page.
• Buy it there, or if you bought a key elsewhere, open Steam and choose Games → Activate a Product on Steam.
• Enter the product code exactly as it was issued to you.
• The game appears in your Steam library — download and play.

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