Single-player games like Harmonia Full HD Edition
Below are 10 single-player Steam games similar to Harmonia Full HD Edition, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Harmonia Full HD Edition page.
Ranked picks
- 1
planetarian: Snow Globe
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure and Simulation with Harmonia Full HD Edition.
"planetarian: Snow Globe," the prequel to Key's sci-fi kinetic novel "planetarian: The Reverie of a Little Planet," is now available with binaural audio support! Enjoy the story of a companion robot and her coworkers at a planetarium, and the simple joys they find in their everyday lives.
- 2
Stella of The End
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure and Simulation with Harmonia Full HD Edition.
Jude Gray, a wandering Courier, receives a request to deliver some very special cargo. This cargo turns out to be Philia, an android girl who is unaffected by the enigmatic Singularity Machines.
- 3
Kanon
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure and Simulation with Harmonia Full HD Edition.
A tale of small miracles in a snow-covered town— Kanon, the very first game from visual novel studio Key, is now available on Steam! Now featuring HD visuals and full voice support! (The protagonist is only voiced in certain scenes.)
- 4
AIR
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure and Simulation with Harmonia Full HD Edition.
Summer stretches on endlessly. Beneath the vast blue sky. Beneath the air in which she awaits— AIR, the second game released by visual novel studio Key, is now available on Steam! Now featuring the side story novel, "First Sky Chapter" and full voice support!
- 5
ATRI -My Dear Moments-
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure and Casual with Harmonia Full HD Edition.
"As the world sank, I found you." In the near future, a sudden and unexplained sea rise has left much of human civilization underwater. In a little town slowly being enveloped by the ocean, an unforgettable summer is about to begin for a boy and a mysterious robot girl...
- 6
Summer Pockets REFLECTION BLUE
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure and Casual with Harmonia Full HD Edition.
No matter how much times passes... I remember that blue, blue summer. Summer Pockets, the midsummer story brought to you by Key, has been powered-up with even more to play, including new heroines and routes, in Summer Pockets REFLECTION BLUE, now available on Steam!
- 7
Lucy -The Eternity She Wished For-
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure and Simulation with Harmonia Full HD Edition.
If there was a robot that could laugh, cry and smile. ...Does it have a soul?
- 8
The Hungry Lamb: Traveling in the Late Ming Dynasty
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure with Harmonia Full HD Edition.
He is a bandit who sells lives. She is a mute girl seeking revenge. In a famine-ravaged ancient China, a ruthless trafficker escorts four girls to a demon's feast. But when a deadly secret is revealed, a cold transaction turns into a journey of redemption. A dark visual novel about an unlikely bond.
- 9
planetarian HD
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure and Simulation with Harmonia Full HD Edition.
planetarian HD is an engaging and emotional visual novel from legendary game studio, Key. A sub-brand of VISUAL ARTS, Key are also famed for creating Kanon, AIR, CLANNAD, Little Busters!, Rewrite, Angel Beats!, and Summer Pockets.
- 10
LUNARiA -Virtualized Moonchild-
Single-player alternative to Harmonia Full HD Edition — playable solo, no multiplayer required. Shares Adventure and Simulation with Harmonia Full HD Edition.
Genius gamer T-Bit rakes in the prize money in VR races day after day. One day, after experiencing a network error mid-race, he ends up in Lunar World, a moon-based server. There, he meets an AI avatar by the name of Lunar-Q. A love story spanning the 384,400 km between the Earth and moon begins!