Single-player games like planetarian HD
Below are 15 single-player Steam games similar to planetarian HD, 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 planetarian HD page.
Ranked picks
- 1
Harmonia
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Simulation with planetarian HD.
From renowned visual novel studio Key, which brought you the highly rated visual novel “planetarian~the reverie of a little planet~”, this is “Harmonia”, the latest kinetic novel in the series.
- 2
planetarian: Snow Globe
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Simulation with planetarian HD.
"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.
- 3
Stella of The End
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Simulation with planetarian HD.
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.
- 4
Harmonia Full HD Edition
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Simulation with planetarian HD.
Set in a war-torn world in the distant future, the sci-fi kinetic novel "Harmonia" follows a mechanical boy and a human girl as they find their way to each other's hearts. Key's 15th anniversary title is back with full voice and FHD resolution, including the main character!
- 5
planetarian ~the reverie of a little planet~
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Casual with planetarian HD.
In time for the 10th anniversary since its original release in Japan, planetarian is an engaging and emotional visual novel from legendary game studio, Key. A sub-brand of VisualArts, Key are also famed for creating Kanon, AIR, CLANNAD, Little Busters!, Rewrite, and Angel Beats!
- 6
Little Busters! English Edition
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Simulation with planetarian HD.
Capturing the hearts of countless fans since 2007, Little Busters! is an emotional visual novel from Key, the minds behind Angel Beats! and CLANNAD. This special English release supports touch controls and dynamic switching between English and Japanese text, and is in HD for the first time on PC.
- 7
Lucy -The Eternity She Wished For-
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Simulation with planetarian HD.
If there was a robot that could laugh, cry and smile. ...Does it have a soul?
- 8
CLANNAD
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Casual with planetarian HD.
From the world renowned visual novel studio Key, the highly rated story of CLANNAD is now available on Steam! Improved visuals, achievement integration, and Dangopedia make this the best version of CLANNAD to date.
- 9
Narcissu 10th Anniversary Anthology Project
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Casual with planetarian HD.
"Life is like a waiting room, except people don't leave in the order they enter." Narcissu is a thought provoking visual novel series about terminal illness, living, dying, and the relationship between those leaving and those left behind. There are no miracles, no heroes, no villains in this story.
- 10
Muv-Luv
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Casual with planetarian HD.
One of the most highly-acclaimed visual novel series arrives on Steam, newly revamped and officially in English! An interdimensional love story that takes high school romance on a roller-coaster ride through the depths of despair, culminating in a sci-fi grand finale of epic proportions.
- 11
LUNARiA -Virtualized Moonchild-
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Simulation with planetarian HD.
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!
- 12
Lunaris
Single-player alternative to planetarian HD — playable solo, no multiplayer required.
Lunaris is a fast-paced sci-fi top-down roguelite shooter: survive escalating enemy waves, stack powerful passive and active abilities, craft wild build synergies, and turn the arena into a neon storm of lasers and explosions. Every run feels fresh and intense.
- 13
Summer Pockets
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Casual with planetarian HD.
From the creators of Angel Beats! and CLANNAD, Key, comes their latest emotional, award-winning journey. Follow protagonist Takahara Hairi as he travels to the secluded island Torishirojima, where he rediscovers what it means to enjoy summer vacation.
- 14
LOOPERS
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Simulation with planetarian HD.
Tyler is a high schooler on a mission. He's going to use every minute of summer vacation to go on as many GPS-assisted scavenger hunts as possible. After running into some old friends during one of these hunts, strange things start happening: The day resets and today plays out exactly like yesterday
- 15
Tomoyo After ~It's a Wonderful Life~ English Edition
Single-player alternative to planetarian HD — playable solo, no multiplayer required. Shares Adventure and Casual with planetarian HD.
From renowned visual novel studio Key, this is the sequel to the highly acclaimed visual novel CLANNAD. Featuring a truly memorable continuation to Tomoya and Tomoyo's journey, Tomoyo After promises to draw you even further into CLANNAD's world.