Single-player games like Slashboy
Below are 8 single-player Steam games similar to Slashboy, 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 Slashboy page.
Ranked picks
- 1

Mexican Ninja
Single-player alternative to Slashboy — playable solo, no multiplayer required. Shares Action and Indie with Slashboy.
Become the Mexican Ninja and fight to take back Nuevo Tokyo, where Narcos and Yakuzas have fused into the ruthless Narkuzas. Master slick combos, unleash outrageous Mexican Jutsus and craft deadly builds in this fast, chaotic 2.5D roguelike beat ’em up.
- 2

SHINOBI: Art of Vengeance
Single-player alternative to Slashboy — playable solo, no multiplayer required. Shares Action with Slashboy.
The iconic SHINOBI returns in an all-new 2D action platformer with a unique hand-drawn look created by the team behind the hit brawler Streets of Rage 4.
- 3

Okinawa Rush
Single-player alternative to Slashboy — playable solo, no multiplayer required. Shares Action and Indie with Slashboy.
Take on the role of the martial arts master Hiro, Meilin, or Shin as they face off in a desperate fight for their lives against the Black Mantis clan. DOUBLE THE MAYHEM: Bring a friend and battle against ninjas, demons, and more in the 2-player local co-op mode of this action-adventure platformer.
- 4

Katanaut
Single-player alternative to Slashboy — playable solo, no multiplayer required. Shares Action and Indie with Slashboy.
Katanaut is a fast-paced, Metroidvania-inspired action roguelite blending fluid combat and cosmic horror. Slash, dodge, and wield powerful abilities as you battle through a station sprawling with twisted, once-human horrors. Adapt, survive, and descend into the shadows to uncover dark secrets.
- 5

STRIDER™ / ストライダー飛竜®
Single-player alternative to Slashboy — playable solo, no multiplayer required. Shares Action with Slashboy.
Strider returns in a brand new adventure, complete with incredible side-scrolling action, and lightning fast combat all in a massive interconnected world! Download the full game February 19th and become the original assassin!
- 6

Abyss Odyssey
Single-player alternative to Slashboy — playable solo, no multiplayer required. Shares Action and Indie with Slashboy.
From indie Chilean developer ACE Team comes a new side-scrolling action adventure game featuring a complex fighting engine in procedurally generated levels that destines its three warriors to battle a different abyss each time! Choose your hero and also learn to possess your enemies in the abyss…
- 7

Shing!
Single-player alternative to Slashboy — playable solo, no multiplayer required. Shares Action and Indie with Slashboy.
Experience the most exciting and immersive beat-em-up combat system ever – become a kickass ninja and slice some demons in style!
- 8

Trinity Fusion
Single-player alternative to Slashboy — playable solo, no multiplayer required. Shares Action and Indie with Slashboy.
Three fractured realities. One collapsing multiverse. Fast, fluid combat in a dark sci-fi Roguevania where each run begins in a separate universe — then lets you fuse your parallel selves, powers, and worlds to create brutal, ever-evolving builds.