Single-player games like CosmoDreamer
Below are 12 single-player Steam games similar to CosmoDreamer, 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 CosmoDreamer page.
Ranked picks
- 1

Like Dreamer
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
A pop and cute bullet-hell shooting game from Cosmo Dreamer "Outside". Both beginners and experts can enjoy speedy and active playing.
- 2

REDNEG ALLSTARS SWING-BY EDITION
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
Cosmo Dreamer Like Dreamer "Outside" is a fantastical and comical boss-rush bullet-hell shooting game remade from a free game. Both beginners and experts can enjoy the intense boss rush.
- 3

Bullet Hell Monday: Black
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
This is a high-difficulty bullet hell shooting game and a sequel to "Bullet Hell Monday." It offers an exciting experience for players who demand advanced skills and precise strategies. As a common system, six types of special weapons are equipped, expanding the player's tactical range.
- 4

Vampire Memories - 吸血鬼的回忆
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
This is a SHMUP/STG game that allows anyone to experience and play happily; Games that will allow you to enjoy playing; Games that can make it easy for you to get started with low technical requirements; SHMUP/STG games that have completely different experiences from other games;
- 5

Polyfury
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
You thought geometry was difficult? Now it's got a gun! Face the fury of the Seven Deadly Shapes and blast your way through a barrage of bullets and lasers in this highly accessible bullet hell.
- 6

Space War: Infinity
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
Vertical semi-procedural shmup with upgrades, real-time enemy waves, and infinite replayability. Level up your ship, unlock 20+ weapons, defeat 5 bosses, and survive endless bullet-hell combat.
- 7

Bullet Hell Monday
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
Beginner Welcome Bullet Hell Shooter. "Chapter Mode", which is starting from a simple stage and gradually becoming more difficult, is recommended for beginners. Once you get used to bullet hell, let's experience full-scale bullet hell in "Challenge Mode".
- 8

Sektori
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
Sektori is an intense, fast paced twin-stick shooter infused with hard hitting techno music. A game where the high-adrenaline gameplay, visuals, and music come together to transport you into another state of consciousness.
- 9

NiGHTS Into Dreams
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required.
Slip off into the dream world and go on an aerial adventure as NiGHTS in this classic Saturn remake. Collect Ideya (colored orbs), rack up points, and battle bosses to help Elliot and Claris save Nightopia from Wizeman the Wicked.
- 10

Danmaku Unlimited 2
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
Classic Japanese style vertical manic shooting action! Shoot, dodge and explode your way through the second entry in the critically acclaimed Danmaku Unlimited series. Battle through nail-biting bullet patterns and compete for dominance on the global leaderboard!
- 11

Danmaku Unlimited 3
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required. Shares Action with CosmoDreamer.
Take to the skies once again as the last defender of humanity against overwhelming odds! Lovingly built to be enjoyed by newcomers and genre veterans alike, Danmaku Unlimited 3 is a perfect medley of the best aspects of classic bullet hell shooters wrapped up in a modern and approachable package.
- 12

Touhou Mystia's Izakaya
Single-player alternative to CosmoDreamer — playable solo, no multiplayer required.
A brand new pixel art restaurant simulator based on the Touhou Project! Play as Mystia, the owner of a small izakaya. Collect ingredients by day, cater to the customers by night, learn recipes from familiar characters, and become the best izakaya owner in all of Gensokyo!