Single-player games like Project Echo: Downfall
Below are 8 single-player Steam games similar to Project Echo: Downfall, 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 Project Echo: Downfall page.
Ranked picks
- 1

THE DARK SIDE OF CECLON
Single-player alternative to Project Echo: Downfall — playable solo, no multiplayer required. Shares Action and Indie with Project Echo: Downfall.
Jensen, the sole survivor of the Nexentia shuttle crash on the planet CECLON. Alone, light years away from all human life! You will have to face the Nocturnes, primitive creatures in order to bring back the Veka energy, humanity's only hope.
- 2

El Paso, Elsewhere 2
Single-player alternative to Project Echo: Downfall — playable solo, no multiplayer required. Shares Action and Indie with Project Echo: Downfall.
MORE STAKES. MORE GUNS. MORE SLOW-MO. James Savage returns in this sequel to the hit third-person shooter. Escape the Void. Fight creatures pulled from myth, history, and imagination. Save yourself.
- 3

Frontiers Reach : Mercenaries
Single-player alternative to Project Echo: Downfall — playable solo, no multiplayer required. Shares Action and Indie with Project Echo: Downfall.
Step into the shoes of a mercenary on the edge of human occupied space as you engage in an immersive world of survival, faction warfare, and a fight to stop an alien empire from destroying human life on the frontier of outer space.
- 4

Marimo-VS-IAS: Our Friends
Single-player alternative to Project Echo: Downfall — playable solo, no multiplayer required. Shares Action and Indie with Project Echo: Downfall.
A 3D action where marimo moss ball fight to survive. Clear around 60 missions as you explore the lake, uncovering hidden items, information, side quests, and lurking threats… Use mission rewards and collected items to upgrade your marimo and take on powerful enemies!
- 5

No Mercy, No Sanctuary
Single-player alternative to Project Echo: Downfall — playable solo, no multiplayer required. Shares Action and Adventure with Project Echo: Downfall.
Survive a gritty 2D apocalypse featuring realistic physics and visceral dismemberment. Fortify your sanctuary by day and defend it by night. Scrutinize every survivor seeking refuge: inspect them for symptoms, for one hidden infection will doom your entire colony.
- 6

Aetherfall
Single-player alternative to Project Echo: Downfall — playable solo, no multiplayer required. Shares Action and RPG with Project Echo: Downfall.
Aetherfall is an elemental post-apocalypse extraction RPG set on a modern Earth where technology has failed and elemental power rules. Master fire, earth, air, and water, combine them into new elements, and risk everything as you fight to survive and grow stronger.
- 7

The Riftbreaker
Single-player alternative to Project Echo: Downfall — playable solo, no multiplayer required. Shares Action and Strategy with Project Echo: Downfall.
The Riftbreaker is a solo or Co-op base-building, survival game with Action-RPG elements for up to 4 players. Hack & slash countless hordes of enemies. Build up your base, craft powerful weapons and research new inventions to survive.
- 8

Tom Clancy’s The Division® 2
Single-player alternative to Project Echo: Downfall — playable solo, no multiplayer required. Shares Action and Adventure with Project Echo: Downfall.
Join The Division in this open world tactical shooter. Engage in intense cover-based combat, team up with friends, and build your ultimate agent to save Washington, D.C.