Hailey’s Treasure Adventure is a 2D action-adventure adult game by Crimson Bird, built in Unity — and unlike most games in this niche, it’s developed with Android as a first-class platform, alongside Windows and Mac. You play as Hailey, a farmer’s daughter whose father vanished ten years ago leaving a debt — and a secret: as a spelunker, he hid a treasure across a series of mines that only his bloodline can open. One month. One debt. A whole mountain of mines.
Reviewed and updated November 2026. Download buttons are at the bottom of the page.
The story setup
The premise is more structured than most adult games: Hailey rejects the debt-collector’s marriage offer and takes his counter-deal — recover her father’s hidden treasure within a month. Each mine holds one stone key; each key opens the path deeper. It gives the game a real progression spine that most games in the genre lack.
How it plays
- Mine exploration — 17 playable levels (plus 5 side levels for Annie), each a self-contained cave with ore, jewels, and one stone key
- Combat and defense — pick-axe melee and explosives against cave-dwelling enemies
- Economy loop — collected ore and jewels convert to money for upgrades, consumables, and skins
- Skins with gameplay effects — e.g. Tomb Explorer (50% extra money, double-jewel chance) or Cherry Red (reward box per level)
- Adult events woven into enemy encounters — the game is 18+ throughout
The Android version
This is one of the rare games on this site with a genuine Android release from the developer — the itch.io page lists Windows, macOS, and Android builds directly. The Android build needs roughly Android 6.0+, 2 GB RAM, and about 2 GB of storage, and runs the full game: all levels, the Annie side-content, the gallery, and saves. It plays in landscape with a virtual joystick and action buttons.
Version note: the developer iterates publicly (the project page marks itself WIP), so newer PC versions sometimes land on Android a little later. The build on this page is the current Android release.
Performance notes
Tested working on modern Android (the dev targets Android 14+). On 4 GB RAM phones it runs comfortably at full settings; on 2-3 GB devices, turn off “Fancy Graphics” in options for a stable frame rate. First launch unpacks Unity assets, so give it a minute before your first session.
How to install on Android
- Tap the Android button below and let the ~255 MB file finish.
- Allow unknown-app installs: Settings → Apps → your browser → Install unknown apps → Allow.
- Open the APK, tap Install.
- Let the first launch unpack before playing.
How to install on iOS
- Download from the iOS button and tap Allow.
- Settings → General → VPN & Device Management → trust the profile.
- Install and launch.
Frequently asked questions
Is Hailey’s Treasure Adventure officially on Android?
Yes — the developer (Crimson Bird) builds an Android version natively alongside PC. This page hosts that Android release.
Is it the full game?
All 17 levels, Annie’s levels, the economy, skins and gallery are included.
Does it work offline?
Fully offline after installation.
