Single-player games like The Lost Key
Below are 8 single-player Steam games similar to The Lost Key, 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 Lost Key page.
Ranked picks
- 1
Somber Echoes
Single-player alternative to The Lost Key — playable solo, no multiplayer required. Shares Action and Adventure with The Lost Key.
Armed with God-given powers, the revived tribune Adrestia is given a second chance to save the universe from her maniacal twin sister. Find secrets, acquire upgrades, and dominate mighty foes through sheer combat prowess as you explore and conquer the horrors of the forsaken vessel Atromitos.
- 2
DEVIATOR
Single-player alternative to The Lost Key — playable solo, no multiplayer required. Shares Action and Indie with The Lost Key.
Deviator is a Metroidvania game centered around deflect, featuring exquisite 2D hand-drawn visuals. Exploring unknown wilderness and mysterious cities, delving into enigmatic realms of consciousness and encountering peculiar creatures. Try to find the truth behind this chaotic world.
- 3
SiNiSistar Lite Version
Single-player alternative to The Lost Key — playable solo, no multiplayer required. Shares Action and Indie with The Lost Key.
A simple 2D action game centered on themes of masochistic tendencies, yearning for death, as well as despair at being attacked by terrifying beings.
- 4
Volkolak: The Will of Gods
Single-player alternative to The Lost Key — playable solo, no multiplayer required. Shares Action and Indie with The Lost Key.
Volkolak: The Will of Gods is an epic 2D soulsvania in a dark Slavic fantasy setting, with hand-drawn animation. Explore an enchanted world full of secrets and enemies. Your choices will lead to several endings: become a bogatyr, a werewolf, or join the darkness.
- 5
GRIME
Single-player alternative to The Lost Key — playable solo, no multiplayer required. Shares Action and Indie with The Lost Key.
Destroy... Absorb... Grow... GRIME is a fast and unforgiving Action-Adventure RPG in which you crush your foes with living weapons that mutate form and function, and then consume their remains with a black hole to strengthen your vessel as you break apart a world of anatomical horror and intrigue.
- 6
Salt and Sacrifice
Single-player alternative to The Lost Key — playable solo, no multiplayer required. Shares Action with The Lost Key.
Join your fellow Marked Inquisitors in this online coop successor to award-winning 2016 Soulslike Salt and Sanctuary.
- 7
Death's Gambit: Afterlife
Single-player alternative to The Lost Key — playable solo, no multiplayer required. Shares Action and Indie with The Lost Key.
Death's Gambit: Afterlife is a challenging 2D action platformer with deep RPG elements. As an agent of Death bound to his service, unravel the mystery of Siradon and discover the true price of immortality.
- 8
DOOMBLADE
Single-player alternative to The Lost Key — playable solo, no multiplayer required. Shares Action and Indie with The Lost Key.
Deep underground, Gloom Girl discovers DOOMBLADE, a sentient weapon hellbent on escape after eons in chains. Together, “Doom and Gloom” embark on a vengeful quest to unlock the powerful abilities and destroy the Dread Lords once and for all in this 2D Action Metroidvania.