This futuristic real time strategy game requires players to build up energy stores and an economy in order to support military battles. Play against the computer opponent or connect over a LAN for multi-player games. Operating System: Windows, Linux, BSD, OS X.
This variation of BosWars is set in Stalin's Soviet Union. Be prepared for the inevitable Nazi attack! Operating System: Windows, Linux.
Inspired by the games Colonization and Civilization, FreeCol is a turn-based civilization-building strategy game. You start in the New World in 1492 and win by creating an independent country with free speech. Operating System: Windows, Linux, OS X.
Also inspired by Civilization, this turn-based strategy game starts in the stone age and ends in the space age. It includes 50 playable units and 541 nations and comes with several playable scenarios. Operating System: Windows, Linux, OS X.
While it isn't a clone or remake, FreeOrion is loosely based on the Master of Orion games. It's a turn-based strategy game set in space. Operating System: Windows, Linux, OS X.
The forces of Tech battle the forces of Magic in this real-time strategy game. While it's still available for download, most Linux distributions now include the fork Megaglest (see below) instead of this older project. Operating System: Windows, Linux.
93. Globulation 2
This real-time civilization-building strategy game aims to reduce the need for micro-management and allow players to focus on strategy. Single- or multi-player games and a level editor are available. Operating System: Windows, Linux.
One of the more lighthearted strategy games around, Hedgewars features "the antics of pink hedgehogs with attitude as they battle from the depths of hell to the depths of space." Features 31 environments, 48 set maps, infinite randomly generated maps, 55 weapons, 280 costumes and support for up to 8 players at once. Operating System: Windows, Linux, OS X, iOS.
95. Kernel Panic
Set in a digital landscape, Kernel Panic is a real-time strategy game with Tron-like graphics. All the resources are free, so players don't need to worry about building an economy—only about fighting against the other hackers on the network. Operating System: Linux, Windows
96. Liquid War
Way back in 2002, Liquid War was named the "most original Linux Game," and it's still worth a look. Control a liquid army as you try to consume your enemies. Operating System: Windows, Linux, OS X.
This fork of Glest adds five new teams to the original Tech and Magic: Egypt, Indians, Norsemen, Persian or Romans. It offers 17 different map types, both single- and multi-player games, and tutorials for new players. Operating System: Windows, Linux.
98. Pax Brittanica
Up to four players can battle at once using the same keyboard on this submarine strategy game. The controls are easy to learn (you only use one button), but the gameplay can be very intense. Operating System: Windows, Linux, OS X.
99. Spring: 1944
This World War II strategy game offers realistic units and strengths. Choose to play as the U.S., Germany, the U.S.S.R. or Great Britain. Operating System: Linux.
100. UFO: Alien Invasion
Seventy years in the future, a secret organization struggles to defend earth from vicious alien invaders. Play as the humans or the aliens in single-player or multi-player combat. Operating System: Windows, Linux, OS X.
101. Unknown Horizons
In this civilization-building strategy game, the emphasis is on building a strong economy. You start with a handful of settlers and resources on an isolated archipelago and work to build a thriving city. Operating System: Windows, Linux, OS X.
102. Warzone 2100
Can you rebuild Earth after nuclear devastation? This game offers an unusually large tech tree and single- or multi-player games. Operating System: Windows, Linux, OS X.
Inspired by Settlers II, Widelands is another real-time strategy game that challenges players to build a civilization. It features three tribes—Barbarians, Imperials, and Atlanteans—and unlike most civilization games, the player doesn't tell each unit what to do but instead gives orders and delegates, more like a real ruler. Operating System: Windows, Linux, OS X.
In this fast-moving real-time strategy game, robot armies fight a never-ending battle. Key features include more than 100 different units, a streamlined economy system, a realistic physics engine, terraforming and more. Operating System: Windows, Linux.
Can you kill all the zombies before they kill you? This turn-based game offers addictive gameplay and settings that allow the player to determine the level of gore. Operating System: OS X.
Perfect for budding astronomers and wanna-be astronauts, Celestia allows you to see the sky as it would appear at any point in time from any point in the known universe. Take a quick trip to Jupiter or plot your starwatching for the evening. Operating System: Windows, Linux, OS X.
107. Electric Sheep
Inspired by the Philip K. Dick novel Do Androids Dream of Electric Sheep? this screensaver connects your system to thousands of others to create abstract designs and patterns. Vote for your favorite patterns to see them reappear more often. Operating System: Windows, Linux, OS X, Android, iOS.
108. LCARS 24
If you've got an old PC around the house (and who doesn't), why not turn it into a Star Trek-themed conversation piece. With this app, you get an alarm clock and file manager with graphics that look like they came right off the Enterprise. Operating System: Windows, DOS.
Turn your PC into a planetarium. Stellarium can display the night skies from any point on earth at any time, and it's used by many planetariums to power their displays. Operating System: Windows, Linux, OS X.
110. Tux Paint
Tux Paint makes it easy for pre-schoolers to create their own "drawings" on the computer. It features an interface with big buttons, fun sound effects and friendly characters. Operating System: Windows, Linux, OS X.
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