Single-player games like Justice Ninja Casey
Below are 16 single-player Steam games similar to Justice Ninja Casey, 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 Justice Ninja Casey page.
Ranked picks
- 1

Teenage Mutant Ninja Turtles: Shredder's Revenge
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action and Adventure with Justice Ninja Casey.
Teenage Mutant Ninja Turtles: Shredder’s Revenge reunites Leonardo, Michelangelo, Donatello and Raphael as they kick shell in a beautifully realized beat ’em up.
- 2

9 Monkeys of Shaolin
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action and Adventure with Justice Ninja Casey.
The true rebirth of iconic beat 'em up genre in vein of old-school video games! As a simple Chinese fisherman Wei Cheng you have to avenge the death of your friends and family slaughtered in a pirate raid at your peaceful village.
- 3

MARVEL vs. CAPCOM Fighting Collection: Arcade Classics
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action with Justice Ninja Casey.
The legendary crossover hits are back! The action-packed lineup consisting of seven unique titles, is full of heavy hitters like X-MEN VS. STREET FIGHTER, and MARVEL vs. CAPCOM 2 New Age of Heroes. The collection also includes the rare beat 'em up game, THE PUNISHER.
- 4

Shovel Knight: Treasure Trove
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action and Adventure with Justice Ninja Casey.
Shovel Knight: Treasure Trove is the complete Shovel Knight collection, containing all 5 games in the epic saga! Dig, blast, slash, and bash your way through a fantastical, 8-bit inspired world of pixel-perfect platforming, memorable characters, and world-class action-adventure gameplay.
- 5

Phantom Breaker: Battle Grounds Classic
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action with Justice Ninja Casey.
Phantom Breaker: Battle Grounds! Enjoy fast and frantic arcade-style beat 'em up gameplay with cute characters. Beat up hordes of weird enemies with awesome special attacks. Local co-op and PVP supported for up to 4 players!
- 6

Infernax
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action and Adventure with Justice Ninja Casey.
Infernax is the adventures of a great knight who returns to his homeland only to find it plagued with unholy magic. Uncover the mysteries of the curse and face the consequences of your actions.
- 7

NARUTO SHIPPUDEN: Ultimate Ninja STORM 3 Full Burst HD
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action and Adventure with Justice Ninja Casey.
Live the 4th Great Ninja War and its overpowering boss fights or defy your friends in ultra dynamic online and offline ninja confrontations!
- 8

Sea of Stars
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Adventure with Justice Ninja Casey.
Sea of Stars is a turn-based RPG inspired by the classics. It tells the story of two Children of the Solstice who will combine the powers of the sun and moon to perform Eclipse Magic, the only force capable of fending off the monstrous creations of the evil alchemist known as The Fleshmancer.
- 9

Ikki Unite
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action with Justice Ninja Casey.
SUNSOFT relapses... The legendary Bad Game Hall of Famer "Ikki" is back, and this time it's a multiplayer experience! You can't start a riot with just one or two people! Enlist up to 16 friends in this Roguelite madness... Ikki but united!
- 10

Ark of Charon
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required.
Build a mobile fortress on the back of a giant and mysterious walking Tree and embark on a journey in this merge of tower defense and colony simulation.
- 11

Ufouria: The Saga 2
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action with Justice Ninja Casey.
Explore the unique and wacky world of SUNSOFT's Ufouria in this exploration-based side-scrolling game. The levels' terrain change each time you play with new secrets to explore. Be charmed, comforted and tickled by the fluffy felt-like remake of the strange-but-cute world of Ufouria!
- 12

Mahjong Solitaire Refresh
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required.
The tile matching puzzle series "Mahjong Solitaire" welcomes the water-themed "Refresh" to its lineup! Fresh new attire, sweet and simple rules. From the upbeat songs and lovely images, to the new drag controls and panel unlocking system, please enjoy this invigorating addition to the series!
- 13

House Cleaning Survival
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Adventure with Justice Ninja Casey.
One hose to clean them all!
- 14

SUNSOFT is Back! レトロゲームセレクション
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action with Justice Ninja Casey.
SUNSOFT revival commemoration! Three carefully selected songs from SUNSOFT's works from the 1980s: "Wings of Madura," "53 Stations of the Tokaido," and "Ripple Island" are included!
- 15

Feudal Bros - Tonosama #1
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action and Adventure with Justice Ninja Casey.
Japan. Edo period. After many years of violent wars, peace has returned to the land, but it doesn’t seem like it will last for long. A new danger lurks in the shadows, and only two noblemen can stop it: Lord Baka, a Japanese feudal lord, and Prince Bouffon, a prince from the faraway land of France.
- 16

City Hunter
Single-player alternative to Justice Ninja Casey — playable solo, no multiplayer required. Shares Action with Justice Ninja Casey.
After 35 years, the only official game is now being revived.