Games like End War RTS
Games like End War RTS include Stardew Valley, Terraria, Garry's Mod, Project Zomboid, and Space Engineers. We matched them by the tags players give End War RTS on Steam (RTS, Sandbox, Indie, Pixel Graphics, and Building): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Pixel Graphics · Sandbox · Indie

Terraria
Shared: Sandbox · Pixel Graphics · Building

Garry's Mod
Shared: Sandbox · Building · Casual

Project Zomboid
Shared: Sandbox · Co-op · Indie

Space Engineers
Shared: Sandbox · Building · Simulation

House Flipper
Shared: Sandbox · Building · Simulation

The Escapists 2
Shared: Pixel Graphics · Co-op · Strategy

Plague Inc: Evolved
Shared: Indie · Simulation · Strategy

Rusted Warfare - RTS
Shared: RTS · Indie · Sandbox

People Playground
Shared: Sandbox · Pixel Graphics · Building

Planetary Annihilation: TITANS
Shared: RTS · Sci-fi · Strategy

TheoTown
Shared: Sandbox · Pixel Graphics · Indie

Anno 1800
Shared: Sandbox · RTS · Simulation

Castle Story
Shared: Sandbox · Building · Indie

Mindustry
Shared: RTS · Sandbox · Building

From the Depths
Shared: Sandbox · RTS · Building

Bloons TD 6
Shared: Co-op · Sandbox · Strategy

Halo Wars: Definitive Edition
Shared: RTS · Sci-fi · Strategy

Cepheus Protocol
Shared: Sandbox · RTS · Building

Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · Indie · Building

Jurassic World Evolution
Shared: Building · Sandbox · Simulation

King Arthur's Gold
Shared: Pixel Graphics · Indie · Sandbox

Graveyard Keeper
Shared: Pixel Graphics · Sandbox · Indie

Two Point Hospital
Shared: Building · Sandbox · Simulation