Single-player games like 2021
Below are 9 single-player Steam games similar to 2021, 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 2021 page.
Ranked picks
- 1

Golf Club Nostalgia
Single-player alternative to 2021 — playable solo, no multiplayer required. Shares Indie and Casual with 2021.
Human life is wiped out. Earth is now a golf course for the ultra-rich. In this dystopian sports puzzler, play through destroyed brutalist monuments, crumbling shopping malls, and abandoned museums as you piece together the full story of how humanity fell.
- 2

Backfirewall_
Single-player alternative to 2021 — playable solo, no multiplayer required. Shares Indie and Adventure with 2021.
Hello and welcome to Backfirewall_, a first-person tragicomic adventure set inside a smartphone. You are the update assistant. Solve wacky puzzles to counter the update and save the previous operating system from deletion. The fate of the System is in your hands!
- 3

Human Fall Flat
Single-player alternative to 2021 — playable solo, no multiplayer required. Shares Indie and Adventure with 2021.
Human Fall Flat is a hilarious, light-hearted platformer set in floating dreamscapes that can be played solo or with up to 8 players online. Free new levels keep its vibrant community rewarded.
- 4

Bionic Bay
Single-player alternative to 2021 — playable solo, no multiplayer required. Shares Indie and Adventure with 2021.
A scientist uses a unique teleportation instrument to escape an ancient biomechanical world filled with imaginative technology, deadly traps, and hidden secrets.
- 5

Braid
Single-player alternative to 2021 — playable solo, no multiplayer required. Shares Strategy and Indie with 2021.
This is the original version of Braid from 2009, which may not work well on newer systems. For an updated version of the game with nicer graphics, more levels and a large amount of developer commentary, see Braid, Anniversary Edition.
- 6

Munin
Single-player alternative to 2021 — playable solo, no multiplayer required. Shares Indie and Adventure with 2021.
Imagine you could move mountains - literally! With realistic physics, Norse runes, rotating platforms and a lot of gray cells you'll help Munin, Odin's messenger in her very own 2D-adventure, to reclaim her power on a journey through Yggdrasil.
- 7

Marble Skies
Single-player alternative to 2021 — playable solo, no multiplayer required. Shares Strategy and Indie with 2021.
Marble Skies is a fast paced 3D-platformer where you control your marble through various levels and try to get the best time for each one. Complete all the levels in your own time, or challenge your friends to get on top of the leaderboards!
- 8

Rock of Ages 3: Make & Break
Single-player alternative to 2021 — playable solo, no multiplayer required. Shares Strategy and Indie with 2021.
Competitive tower defense meets arcade action and gets rolled up with ACE Team's quirky, Monty Python-esque humor into one giant, creative game for the ages. This time around, you can even make your own levels!
- 9

Bad Bad
Single-player alternative to 2021 — playable solo, no multiplayer required. Shares Indie with 2021.
You play as a shooter along the way shooting bombs, destroying barricades, finding supplies and roads until you see a helicopter to complete the game. After the battle, don't forget to admire the anime foot wall on the road.