Single-player games like Lost Keys
Below are 9 single-player Steam games similar to Lost Keys, 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 Lost Keys page.
Ranked picks
- 1
A Chocolate World (the impossible game)
Single-player alternative to Lost Keys — playable solo, no multiplayer required. Shares Strategy with Lost Keys.
This is 3d platformer an unusual adventure, come inside a world of chocolates and desserts where every move can be fatal each level differs from the other.. No save point the goal is to finish every level with absolute precision it's challenging it' has zero calories.... press alt+f4 to quit game
- 2
Granvil's Fairytale
Single-player alternative to Lost Keys — playable solo, no multiplayer required. Shares Adventure and Casual with Lost Keys.
Granvil's fairytale is an interesting and challenging platform adventure that gives you a lot of satisfaction. By controlling the movements of the dwarf, you need to show above-average dexterity to move on to the next stage. At the same time, you will see an world full of obstacles and surprises!
- 3
The Perplexing Orb 2
Single-player alternative to Lost Keys — playable solo, no multiplayer required. Shares Adventure and Casual with Lost Keys.
Experience an all new puzzle platforming adventure like none other! Roll, shrink, grow, zip, and jump your way through over 70 all new stages. Experience the classic Perplexing Orb game play with all new twists involving The Perplexing Orb's new character abilities.
- 4
The World's Hardest Game 3D Nostalgia
Single-player alternative to Lost Keys — playable solo, no multiplayer required. Shares Adventure and Casual with Lost Keys.
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!
- 5
Do Up
Single-player alternative to Lost Keys — playable solo, no multiplayer required. Shares Casual with Lost Keys.
Do Up is a minimalist, troll-like 3D parkour game. Your goal? Finish in the shortest time possible.
- 6
![Attempt[42] — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/562520/header.jpg?t=1764259973)
Attempt[42]
Single-player alternative to Lost Keys — playable solo, no multiplayer required. Shares Casual with Lost Keys.
Challenging first person puzzle platformer.
- 7
Time in Time
Single-player alternative to Lost Keys — playable solo, no multiplayer required. Shares Strategy and Casual with Lost Keys.
Time in Time is a side scroller puzzle-platformer game where you control everything with timers..
- 8
Semblance
Single-player alternative to Lost Keys — playable solo, no multiplayer required. Shares Adventure and Casual with Lost Keys.
Semblance is an innovative platformer with deformable terrain, set in a beautiful minimalist world. It’s a game that asks, what if you could deform and reshape the world itself? Semblance takes the idea of a ‘platform’ in a platformer and turns it on its head.
- 9
Blood Island
Single-player alternative to Lost Keys — playable solo, no multiplayer required. Shares Strategy and Adventure with Lost Keys.
Experience the mystery that takes place on the blood island, a place that no one has ever returned from. Survive by creating, managing your resources and facing deadly creatures, on this journey you are your only ally!