Games like Istrolid
Games like Istrolid include Terraria, Cosmoteer: Starship Architect & Commander, Once Human, STAR WARS™ Empire at War - Gold Pack, and Space Engineers. We matched them by the tags players give Istrolid on Steam (Free to Play, Strategy, Building, Space, and Multiplayer): closest matches first, and among equally close ones the better-known games.
Terraria
Shared: Multiplayer · Sandbox · Building
Cosmoteer: Starship Architect & Commander
Shared: Building · Space · Strategy
Once Human
Shared: Free to Play · Multiplayer · Building
STAR WARS™ Empire at War - Gold Pack
Shared: Strategy · Space · RTS
Space Engineers
Shared: Building · Space · Sandbox
King Arthur's Gold
Shared: Multiplayer · Building · Indie
Halo Infinite
Shared: Free to Play · Multiplayer · Singleplayer
The Escapists 2
Shared: Strategy · Multiplayer · 2D
Stellaris
Shared: Strategy · Space · Sci-fi
Stardew Valley
Shared: Multiplayer · Pixel Graphics · Building
Reassembly
Shared: Building · Strategy · Space
Planetary Annihilation: TITANS
Shared: Strategy · RTS · Multiplayer
Oxygen Not Included
Shared: Building · Strategy · Sandbox
Factorio
Shared: Strategy · Multiplayer · Sandbox
Castle Story
Shared: Strategy · Building · Multiplayer
Starbound
Shared: Space · Sandbox · Multiplayer
Mindustry
Shared: Strategy · Building · RTS
Garry's Mod
Shared: Building · Multiplayer · Sandbox
Trove
Shared: Free to Play · Sandbox · Multiplayer
Rusted Warfare - RTS
Shared: Strategy · RTS · Multiplayer
SMITE®
Shared: Free to Play · Multiplayer · Strategy
Forts
Shared: Strategy · Multiplayer · Building
No Man's Sky
Shared: Space · Multiplayer · Sci-fi
ASTRONEER
Shared: Multiplayer · Space · Building