Games similar to StarCraft include 0 A.D., which is free and open source. Other options are Age of Empires, Warcraft III, Warzone 2100 and Age of Mythology. There's no shortage of RTS Games like StarCraft, with more than 25 alternatives for Windows, Linux, Mac, Android and iPad.
This is a real-time RTS, on steroids.
All the normal limiting factors on RTS games, like un-replenishable resources, unit limits, size and range limits have all been stripped away, leaving only a gigantic, huge war game, whose scale is limited only by your imagination.
United Kingdom
Littlewargame is a medieval-themed HTML5 Real-Time-Strategy game with multiplayer mode and a map editor. It runs completely in your browser without any download required.
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!.
United States
Starfall Online is an MMO real-time space wargame powered by Unreal Engine 4, where you can assemble own spaceship flotilia and lead it into battle.
Canada
Settle your people on fertile land, gather resources and construct your village, as the commander of a Bronze Age civilization in the Near East.
Canada
Australia
Evolution RTS is a free an Open Source RTS game designed using the Spring Engine. It is continually developed and receives updates often.
Company of Heroes is a 2006 real-time strategy video game developed by Relic Entertainment and published by THQ for the Microsoft Windows and OS X operating systems. It was the first title to make use of the Games for Windows label.
Earth 2140, 2150 and 2160 are 2-D real-time strategy computer games created in 1997, 1999 and 2000 by Polish-based Reality Pump Studios and published by TopWare Interactive (later acquired by Zuxxez Entertainment).
Germany
EU
Priority: Survive is a real-time strategic game. The story is placed into the future to a distant planet. The game features: 3 unique groups (army, pirates, aliens), 24 units, 15 buildings, 6 missions
