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

Rotatex 2
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
Rotatex 2 is a Ninja cat with spinning, jumping puzzles and parkour!
- 2

City 13
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
City 13 is a fast-paced, hardcore 2D platformer in the spirit of classic games straight from the nineties
- 3

R.T.O. Tales of the Dark Lands - Deluxe Edition
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
R.T.O. Deluxe Edition Platform action retro 16-bit style.
- 4

Galacticon
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action with Arnold.
Galacticon is a video game with the look and feel of arcade cabinet games from the early 80's in the style of Williams classics: "Defender" or "Joust", with the gameplay of legendary "Jetpac", and with touches of "puzzle".
- 5

Robot Robert
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
Robert the Robot is an action-platformer. A huge and dangerous alien world awaits you. If, of course, you can defeat those who stand in your way, in 2D battles in the style of Contra.
- 6

POPAPOM
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
A fast-paced action platformer roguelite with frantic combat, hundreds of modifying items, and dangerously charismatic monsters in the best arcade arena style. It’s time to make a POPAPOM!
- 7

Feeling Square?
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action with Arnold.
Something huge is Coming Soon...
- 8

Downwell
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
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.
- 9

BlackEye
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
BlackEye is an adventure game, and its main character is the inhabitant of the world of Koyte. This mysterious world is divided into two - upper and lower ones. No one inhabitant of the upper world would voluntarily go down to the lower world. However the main character has to reach the bottom!
- 10

Get Achievements for Achievements
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
The main goal of this game is to get achievements.
- 11

Cyberoque
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
The game takes place in 2215. Suddenly terrible news has come from the outskirts of the solar system: our civilization was attacked by the alien armies. A terrible war begins, humanity is surrounded, enemy space ships press the earth's army.
- 12

Halloween Pumpkin Story
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
Evil spirits on the Day of All Saints give the pumpkin power and send into the otherworldly dark world of nightmare and horror, and what will happen to the pumpkin you will be able to find yourself in the world of the game!
- 13

Super Jet Juck
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
Super Jet Juck is a dynamic puzzle and adventure game. Join the soldiers Juck and Tom!
- 14

CRYEP
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
CRYEP is a hardcore two-dimensional action platformer that combines the genre of "rogue" and the mechanics of Contra. Actions take place in a parallel universe, year 3318. Go on an expedition and fight with alien enemies.
- 15

SAMS
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
Classic shooter with traveling to various exotic planets.
- 16

Moi Mei
Single-player alternative to Arnold — playable solo, no multiplayer required. Shares Action and Adventure with Arnold.
The fate of his brother in danger, May is going to be a dangerous journey.