Games like 8-Bit Hordes
Games like 8-Bit Hordes include Stardew Valley, 8-Bit Armies, The Escapists 2, TheoTown, and Anno 1800. We matched them by the tags players give 8-Bit Hordes on Steam (Strategy, Indie, RTS, Simulation, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Pixel Graphics · Multiplayer · Simulation

8-Bit Armies
Shared: Strategy · Indie · Simulation

The Escapists 2
Shared: Strategy · Multiplayer · Pixel Graphics

TheoTown
Shared: Simulation · Strategy · Pixel Graphics

Anno 1800
Shared: Strategy · Simulation · Multiplayer

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Indie

Plague Inc: Evolved
Shared: Strategy · Indie · Simulation

Castle Story
Shared: Strategy · Indie · Multiplayer

Terraria
Shared: Multiplayer · Pixel Graphics · Sandbox

Total War: WARHAMMER II
Shared: Strategy · RTS · Fantasy

Teardown
Shared: Indie · Multiplayer · Voxel

Anno 117: Pax Romana
Shared: Strategy · Simulation · RTS

From the Depths
Shared: RTS · Strategy · Building

Rusted Warfare - RTS
Shared: Strategy · RTS · Indie

Prison Architect
Shared: Simulation · Strategy · Building

WorldBox - God Simulator
Shared: Simulation · Pixel Graphics · Sandbox

House Flipper
Shared: Simulation · Multiplayer · Building

Mount & Blade II: Bannerlord
Shared: Strategy · Multiplayer · Simulation

Age of Mythology: Extended Edition
Shared: Strategy · RTS · Multiplayer

Stonehearth
Shared: Strategy · Simulation · Building

Two Point Hospital
Shared: Simulation · Strategy · Indie

The Escapists
Shared: Strategy · Pixel Graphics · Indie

Graveyard Keeper
Shared: Pixel Graphics · Simulation · Indie

7 Days to Die
Shared: Multiplayer · Voxel · Indie