Single-player games like Nixxsz Castle
Below are 9 single-player Steam games similar to Nixxsz Castle, 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 Nixxsz Castle page.
Ranked picks
- 1
Blue Boy: Bleeding Out
Single-player alternative to Nixxsz Castle — playable solo, no multiplayer required. Shares Action and Indie with Nixxsz Castle.
Blue Boy: Bleeding Out is a short but challenging platformer where you bleed as you run. You must avoid touching your bloody path on the way to the exit.
- 2
The True Slime King
Single-player alternative to Nixxsz Castle — playable solo, no multiplayer required. Shares Action and Indie with Nixxsz Castle.
An evil presence has emerged in the kingdom… but is it you or is it them? Play as a fallen king and somewhat immortal slime to conquer an onslaught of obstacles and puzzles in a quest to reclaim your fallen kingdoms. Smooth and simple controls for the ultimate experience in 2D precision platforming!
- 3
Super Magbot
Single-player alternative to Nixxsz Castle — playable solo, no multiplayer required. Shares Action and Indie with Nixxsz Castle.
A precise 2D platformer with a twist. NO JUMPING. Master your magnetic powers to beat each level with speed and skill. Enjoy classic 16-bit gaming vibes, tackle challenging achievements and compete for global leaderboard supremacy along the way.
- 4
La-Mulana 2
Single-player alternative to Nixxsz Castle — playable solo, no multiplayer required. Shares Action and Indie with Nixxsz Castle.
The long-awaited sequel to La-Mulana, La-Mulana 2 follows Lumisa Kosugi as she explores the ancient ruins of La-Mulana. Desperate to find the cause of the recent slew of monsters appearing from the ruins, Lumisa discovers the "other" La-Mulana: the ruins known as Eg-Lana.
- 5
Below The Ocean
Single-player alternative to Nixxsz Castle — playable solo, no multiplayer required. Shares Action and Indie with Nixxsz Castle.
Dive into the world 'Below the Ocean'! Master thrilling moves like tether-swinging, bubble-jumping, bungee-bouncing, and sling-shot in a mesmerizing underwater adventure. Solve intriguing puzzles and seek hidden treasures. Are you ready to embark on this unforgettable journey?
- 6
Aeon Drive
Single-player alternative to Nixxsz Castle — playable solo, no multiplayer required. Shares Action and Indie with Nixxsz Castle.
Rush through the cyberpunk landscapes of Neo Barcelona in Aeon Drive, an action-platformer with a speedrunning twist! Whether solo or in up to 4 player co-op, sprint and dash through many areas of the neon-infused city - and use your time and space-bending abilities to get ahead.
- 7
Slime-san: Superslime Edition
Single-player alternative to Nixxsz Castle — playable solo, no multiplayer required. Shares Action and Indie with Nixxsz Castle.
Slime-san was minding his own business when suddenly… A giant worm appeared and gobbled him up! Deep within the worm’s belly, Slime-san has to face a decision: Be digested by the incoming wall of stomach acid... Or jump, slide and slime his way through the worm and back out its mouth!
- 8
Mekabolt
Single-player alternative to Nixxsz Castle — playable solo, no multiplayer required. Shares Action and Indie with Nixxsz Castle.
Use your trusty Mekabolt device to manipulate robots, solve a variety of puzzling levels and obtain batteries to fix the robots!
- 9
Nixxsz Maids Blazing
Single-player alternative to Nixxsz Castle — playable solo, no multiplayer required. Shares Action and Indie with Nixxsz Castle.
Nixxsz Maids Blazing is a very simple and small score-attack arena "slasher" set in a Dark Castle. Choose a maid, master her habilities and cut in half all enemies! Cut. Slash. Repeat!