The Best Multiplayer base-building Games for Mac OS - Page 3

Between Two Stars is a 2D procedurally generated space exploration game. Players take control of a starship, as part of a simulation on behalf of the Orpheus Corporation and explore the Sierra Galaxy to discover new worlds and new materials with which to trade, craft and build bases.

Screeps: World is an open source MMO RTS sandbox game for programming enthusiasts, wherein the core mechanic is programming your units AI. You control your colony by writing JavaScript which operates 24/7 in the single persistent open world filled by other players on par with you.

Survive the post apocalypse in Wasteland Survival - the last shelter for survivors on earth! The first thing you need learn is survival. Build home. Craft & Upgrade weapons to kill hordes of zombies, Hunt & Explore with your dog. Gather resources and PVP Plunder... Can you stop the zombie apocalypse?