Single-player games like Siphonophore
Below are 8 single-player Steam games similar to Siphonophore, 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 Siphonophore page.
Ranked picks
- 1
The Adventures of Mr. Willickers the Rotting Mule
Single-player alternative to Siphonophore — playable solo, no multiplayer required. Shares Action and Indie with Siphonophore.
Mr. Willickers can never, ever die. He'll chase you until the very ends of the earth.
- 2
Alien Wall
Single-player alternative to Siphonophore — playable solo, no multiplayer required. Shares Action and Indie with Siphonophore.
Alien Wall is a powerful genre mix between a brick breaker and ‘shoot em up’. Modern retro Arcade fun at its best!
- 3
PuPaiPo Space Deluxe
Single-player alternative to Siphonophore — playable solo, no multiplayer required. Shares Action and Indie with Siphonophore.
Hop into your spaceship and battle waves of opponents in your journey to find the legendary space pizza! Now 100% more Deluxe than ever!
- 4
Solbane
Single-player alternative to Siphonophore — playable solo, no multiplayer required. Shares Action and Indie with Siphonophore.
Battle against bosses in a shoot'em up combined with RPG elements. Choose between three diverse classes, and create your combo build from a pool of over 50 abilities. The game features a variety of bosses that require different strategies and builds to conquer.
- 5
Spacebase19
Single-player alternative to Siphonophore — playable solo, no multiplayer required. Shares Action and Indie with Siphonophore.
Defend Spacebase 19 from the asteroids swarming down on the station! Shoot down waves of stones and equip different powerful weapons. How many waves can you last? A simple nostalgic retro arcade turret defense shooter.
- 6
X-Force Genesis
Single-player alternative to Siphonophore — playable solo, no multiplayer required. Shares Action and Indie with Siphonophore.
This game that brings back all the charm of shmup games from the 80s/90s. X-Force Genesis is a frantic and chaotic space shooter created from big and beautiful graphics with insane boss battles. Embark on epic battles and stop enemies from establishing a military base in orbit around X-planet
- 7
Deep Space Survivor: Endless Starfield
Single-player alternative to Siphonophore — playable solo, no multiplayer required. Shares Action and Indie with Siphonophore.
"Deep Space Survivor: Endless Starfield" is a survivor-style game. Your interstellar battleship accidentally enters an unknown universe, fighting its way through endless enemies, roaming multiple star systems, and collecting meteor resources to forge your ultimate orbital weapon.
- 8
The Shore
Single-player alternative to Siphonophore — playable solo, no multiplayer required. Shares Action and Indie with Siphonophore.
THE SHORE is a first person story driven game with an atmospheric environment and narrations, You will encounter mysterious creatures and unravel the secrets behind them. Strong elements of horror, struggle to survive an unknown world that will make you question your own sanity.