Games like Lonecastle
Games like Lonecastle include Escape From Duckov, Nation Red, SYNTHETIK: Legion Rising, Megabonk, and RUINER. We matched them by the tags players give Lonecastle on Steam (Indie, Action, Top-Down Shooter, Score Attack, and Survival): closest matches first, and among equally close ones the better-known games.

Escape From Duckov
Shared: Action · Top-Down Shooter · Survival

Nation Red
Shared: Action · Indie · Top-Down Shooter

SYNTHETIK: Legion Rising
Shared: Indie · Top-Down Shooter · Action

Megabonk
Shared: Indie · Action · Survival

RUINER
Shared: Action · Top-Down Shooter · Indie

Hotline Miami
Shared: Action · Indie · Top-Down Shooter

Guardians of Orion (Phase 2)
Shared: Action · Indie · Top-Down Shooter

The Ascent
Shared: Top-Down Shooter · Action · Indie

Yet Another Zombie Survivors
Shared: Top-Down Shooter · Indie · Survival

20 Minutes Till Dawn
Shared: Survival · Top-Down Shooter · Indie

Last Oasis
Shared: Action · Survival · Indie

RUNNING WITH RIFLES
Shared: Action · Top-Down Shooter · Indie

Green Hell
Shared: Survival · Action · Indie

PUBG: BATTLEGROUNDS
Shared: Survival · Action

The Last Stand: Aftermath
Shared: Top-Down Shooter · Survival · Action

We Happy Few
Shared: Action · Survival · Indie

Feed and Grow: Fish
Shared: Survival · Action · Indie

Palworld
Shared: Survival · Indie · Action

12 is Better Than 6
Shared: Action · Top-Down Shooter · Indie

Skul: The Hero Slayer
Shared: Indie · Action

Splatter - Zombiecalypse Now
Shared: Action · Top-Down Shooter · Indie

ARK: Survival Ascended
Shared: Survival · Action · Indie

Rust
Shared: Survival · Action · Indie

Forager
Shared: Indie · Survival · Action