Single-player games like Through Decay
Below are 8 single-player Steam games similar to Through Decay, 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 Through Decay page.
Ranked picks
- 1

Shellbound
Single-player alternative to Through Decay — playable solo, no multiplayer required. Shares Action and Indie with Through Decay.
Shellbound is a 2D metroidvania set on a gigantic snail. You’re a parasite exploring a living world, battling and controlling enemies that will cause the ecosystem to evolve around you. Platform through diverse biomes, solve puzzles, and unravel your role in the giant creature’s life cycle.
- 2

Mariachi Legends
Single-player alternative to Through Decay — playable solo, no multiplayer required. Shares Action and Indie with Through Decay.
Mariachi Legends is a brutal, pixel art, combat-oriented Metroidvania set in the heart of Mexico.You play as Pablo Cruz, a detective who has agreed to a deal with Death herself. She has given Pablo the ability to transform into the mighty La Sombra allowing him to fight back against evil.
- 3

Phaze Shift
Single-player alternative to Through Decay — playable solo, no multiplayer required. Shares Action and Indie with Through Decay.
Switch, adapt, and evolve in Phaze Shift! A tag-team, action Metroidvania. Swap between two characters, fuse upgrades to forge new abilities, battle mechanized bosses, and explore a sleeping digital world in a hand-drawn diorama-style 2D adventure.
- 4

Plus Ultra: Legado
Single-player alternative to Through Decay — playable solo, no multiplayer required. Shares Action and Indie with Through Decay.
Explore a vast, colorful world in this 2D hand-drawn Metroidvania set during the Age of Discoveries. Grab your halberd and become a hero amid the storm!
- 5

lil: Essence of Life
Single-player alternative to Through Decay — playable solo, no multiplayer required. Shares Indie and Adventure with Through Decay.
A hand-drawn Metroidvania focused on exploration, combat, and progression through essence absorption, evolving weapons, and player-driven balance choices.
- 6

Necro Pop
Single-player alternative to Through Decay — playable solo, no multiplayer required. Shares Action and Indie with Through Decay.
Necro Pop is an all-new action genre platformer we lovingly refer to as Arcadevania. On your adventure, you will discover new abilities, upgrades, secrets. You can free your ghostly friends using multiple combat abilities, magics, and maybe even a minion across multiple re-playable dungeons!
- 7

Echoes From The Soul
Single-player alternative to Through Decay — playable solo, no multiplayer required. Shares Action and Indie with Through Decay.
"Let the fragments reverberate within your being. Let the echoes from your soul vibrate within every living bodycell. Now, my child, you're whole again. Be it a good or a bad thing, we'll leave for you to choose."
- 8

Karma Exorcist
Single-player alternative to Through Decay — playable solo, no multiplayer required. Shares Action and Indie with Through Decay.
The underworld lies in ruins, ravaged by evil karma. In this unknown and perilous realm of the dead, you must fight against demonic forces, collect mystical artifacts, face the Yama Kings and the Ghost Emperors, sever the Karma, and reforge the path of reincarnation.