Single-player games like The World's Hardest Game 3D
Below are 9 single-player Steam games similar to The World's Hardest Game 3D, 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 The World's Hardest Game 3D page.
Ranked picks
- 1

The Line
Single-player alternative to The World's Hardest Game 3D — playable solo, no multiplayer required. Shares Indie and Casual with The World's Hardest Game 3D.
Reinventing of 3D puzzles. Experimental gameplay you've never seen before.
- 2

The World's Hardest Game 3D Nostalgia
Single-player alternative to The World's Hardest Game 3D — playable solo, no multiplayer required. Shares Indie and Casual with The World's Hardest Game 3D.
Easy to play, hard to finish. The World's Hardest Game, which you used to play on flash game sites, is now with you in 3D. The same 30 levels as in the original game are now here! Dodge enemies and reach to the end in this 3D Hard Platformer!
- 3

The World's Hardest Game 3D 2
Single-player alternative to The World's Hardest Game 3D — playable solo, no multiplayer required. Shares Indie and Casual with The World's Hardest Game 3D.
2nd game of the 3D version of the The World's Hardest Game you play on flash game sites! 38 different, unique and challenging levels are waiting for in this 3D Platformer! Will you be able to see the last level?
- 4

Mirage: Ignis Fatuus
Single-player alternative to The World's Hardest Game 3D — playable solo, no multiplayer required. Shares Indie and Casual with The World's Hardest Game 3D.
Control a cuboid, see things from different perspectives, and overcome impossible terrain in this unique and innovative isometric puzzle!
- 5

The Virus
Single-player alternative to The World's Hardest Game 3D — playable solo, no multiplayer required. Shares Indie and Casual with The World's Hardest Game 3D.
Play as a White Blood Cell whose home has been invaded by viruses. Your job is to protect the red blood cells by collecting them. Navigate through a variety of challenging levels, collecting all of the red blood cells and avoiding the viruses in hopes to rid your home of The Virus.
- 6

Balls and Dungeons
Single-player alternative to The World's Hardest Game 3D — playable solo, no multiplayer required. Shares Indie and Casual with The World's Hardest Game 3D.
Challenging spatial puzzle platformer. Open walls and put the balls in the holes. Requires logic and tactics to complete. Lots of levels with increasing complexity. Relaxing and ambient gameplay. How deep can you get?
- 7

CaS-Puz: Camera Surface Puzzle
Single-player alternative to The World's Hardest Game 3D — playable solo, no multiplayer required. Shares Indie with The World's Hardest Game 3D.
Your perspective changes the world. In this hardcore platformer, the existence of walls depends on the angle of your camera. A seemingly impassable level will transform once you look from a different angle, and every careless jump and camera movement can turn into a flight into the void.
- 8

Logic
Single-player alternative to The World's Hardest Game 3D — playable solo, no multiplayer required. Shares Indie and Casual with The World's Hardest Game 3D.
Logic is a 3D logical platform game, where you can get through the levels by solving several different puzzles with the help of moveable cubes, by switching buttons and pressure plates, and by using elevators and teleporting platforms.
- 9

The World's Hardest Game 3D Nostalgia 2
Single-player alternative to The World's Hardest Game 3D — playable solo, no multiplayer required. Shares Indie and Casual with The World's Hardest Game 3D.
Easy to play, hard to finish. The World's Hardest Game 2, which you used to play on flash game sites, is now with you in 3D! The same 50 levels as in the original game are now here. Be patient, dodge enemies and reach to the end in this 3D Hard Platformer!