Single-player games like Boss 101
Below are 10 single-player Steam games similar to Boss 101, 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 Boss 101 page.
Ranked picks
- 1

Zaxterion: Space Frenzy!
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
You play as a young boy who dreams of being a famous astronaut who discovers alien worlds and life. One hot summer day, you fall asleep and into a terrifying dream made up of your worst childhood fears. Can you survive this nightmare of asteroids, space spiders, deadly skulls & more?
- 2

LUFTRAUSERS
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
The skies are aflame and the seas will overflow with wreckage in Vlambeer’s stylish arcade shooter LUFTRAUSERS! Take to the skies in customized fighter planes to battle battleships, submarines, and rival aces for glory, honor, and high scores.
- 3

Super Catboy
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
Super Catboy is an action-packed platformer created in a high-bit pixel art style, combining the best elements of the golden 16-bit platformer era of the 90s with some ‘pawsome’ new mechanics! And let’s not forget; there’s plenty of CAT CONTENT!
- 4

Iron Fisticle
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
A modern take on the classic arcade arena shooter. Taking inspiration from an entire generation of action games, Iron Fisticle builds on classic titles like Gauntlet and Robotron while adding over 100 collectible items, an RPG style upgrade system and local multiplayer.
- 5

Downwell
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
Downwell is a curious game about a young person venturing down a well in search of untold treasures with only his Gunboots to protect him.
- 6

Mirage Feathers
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
「Maybe one day, I won't have to fight when I fly.」
- 7

Cyberhunt
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
Cyberhunt is a retro procedurally generated twin stick shooter, that takes you back to the sweet to the sweet arcade machines era!
- 8

Aqua Kitty - Milk Mine Defender
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
Aqua Kitty is a fast paced retro styled submarine arcade shooter with optional 2 player local Co-op.Blast through hordes of mechanical sea monsters in your kitty sub and defend the deep sea milk mining kittens!THE MILK MUST FLOW!
- 9

Cuphead
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
Cuphead is a classic run and gun action game heavily focused on boss battles. Inspired by cartoons of the 1930s, the visuals and audio are painstakingly created with the same techniques of the era, i.e. traditional hand drawn cel animation, watercolor backgrounds, and original jazz recordings.
- 10

Zazmo Arcade Pack
Single-player alternative to Boss 101 — playable solo, no multiplayer required. Shares Action and Indie with Boss 101.
The Zazmo Arcade Pack is a collection of co-op, single player and competitive games inspired by arcade games we love. We took a few of our favorites and put the Donley Time Foundation spin on them. Five arcade games with multiple modes and tons of fun for you!