The hidden object game takes place in a storybook world of hand-drawn 2D illustrations. The independently developed title traverses differently themed planets, with every illustration carefully drawn with ballpoint pen for a warm, nostalgic feel.
Heartreasure: Stellar Journey is available for Windows and Mac operating systems through Steam, featuring music composed by Daisuke Shiiba. The game is playable on Steam Deck without the update installed by enabling Proton Experimental. Select the "Force the use of a specific Steam Play compatibility tool" and choose "Proton Experimental." This setting will not affect other games.
The solo piano EP publications on vinyl record and cassette tape are available for purchase through the BOOTH website in Japan. Performance by pianist Chie Shijo was carefully captured using rare open-reel tape instruments. The two included acoustic pieces are the gentle "Shooting Star," reminiscent of twinkling solar spheres, and the light and jazzy "Sunnyside."
From the Steam product page:
A pen-drawn world reminiscent of the illustrations in children's literature, accompanied by music for guitar and other instruments ripe with nostalgia for an old hometown. This is the background where the Story, a story meant for someone, unfolds.Steam - Soundtrack Now on Sale
BOOTH - Heartreasure: Stellar Journey Original Soundtrack Vinyl Edition [EPレコード] / [カセットテープ+DLカード]
ゲーム『Heartreasure(ハートレジャー)』をSteam Deckに正式対応したアップデートを行いました!
— asaha🦑3月ラフォーレ原宿出店 (@vpandav) February 28, 2026
Stean Deckで寝る前に布団とかで遊べるよ~! https://t.co/jCsgSz9HFG pic.twitter.com/5FV2ORhGaE


