Single-player games like SUM
Below are 10 single-player Steam games similar to SUM, 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 SUM page.
Ranked picks
- 1

Afloat
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Adventure and Simulation with SUM.
Afloat is a VR survival game, where you gather resources, craft items and upgrade your raft.
- 2

You Are a Bird
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Indie and Adventure with SUM.
You Are a Bird is an immersive VR bird flight sim where your real arms become wings. Flap and angle your wings to explore and hunt in VR. Based on real bird flight mechanics and soaring flight physics.
- 3

Battlewake
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Indie and Adventure with SUM.
Fight for dominion in Battlewake, a fantasy naval combat game built for VR. Play as 4 mythical pirate lords, captain massive battle-ready warships, and summon ancient powers as you set sail on a larger-than-life nautical war for the ages.
- 4

J15 Jet Fighter VR (歼15舰载机)
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Indie with SUM.
The J15 Jet Fighter is a modern air combat VR Game, You will be driving the J-15 fighter, carrying out training missions and combat missions on the Liaoning aircraft carrier.
- 5

Police Enforcement VR : 1-King-27
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Indie and Adventure with SUM.
Police Simulator Built From The Ground Up For Virtual Reality!
- 6

HelixVision
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Indie and Adventure with SUM.
Epic stereoscopic gaming, HelixMod in virtual 3D TV brings your full length 2D games into the 3rd dimension. Try our Free slideshow Demo in VR.
- 7

The Walking Dead Onslaught
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Indie and Adventure with SUM.
There’s no rest when survival is on the line. Step into AMC’s The Walking Dead and prepare for an onslaught of walkers as you assume the roles of your favorite characters from the show, and confront the horrors and humanity of this apocalyptic new world.
- 8

The Walking Dead: Saints & Sinners
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Indie and Adventure with SUM.
Saints & Sinners is a game unlike any other in The Walking Dead universe. Every challenge you face and decision you make is driven by YOU. Fight the undead, scavenge through the flooded ruins of New Orleans, and face gut-wrenching choices for you and the other survivors. Live The Walking Dead.
- 9

VR_PlayRoom
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Simulation and Casual with SUM.
Play a game with your friends to reach the highest score.
- 10

VR_PlayRoom : Episode Beginning (Escape Room - Horror)
Single-player alternative to SUM — playable solo, no multiplayer required. Shares Indie and Adventure with SUM.
The main goal of this game is to find clues and escape the room using things in the room.