Power Manga
Power Manga, developed by TLK Games, belongs already to the legacy of the space adventure. It is one of the best Arcade Game developed under GNU General Public License. The present version for Windows is as neat as exciting. 42 levels, more than 200 sprites, some 14 guards that you must destroy... After a peace treaty about free interplanetary circulation that was concluded 150 years ago, the whole space has been turned into a giant floating trash. ... Meteorites deviated from their trajectories and with wild pirates, each of them representing a deadly danger for the peaceful navigators...
http://www.tlkgames.com/share/power_manga_share.exe - 7Mb - Download - Screenshot

Armada 2250: The Rebellion
Armada 2250: The Rebellion is an action/adventure game in which you play as a lieutenant in the United Space Colonies Navy (USCN). Your current assignment is on planet Pegasus where a small USCN detachment is attempting to stop a band of pirates from raiding USCN trade convoys. ... includes Capture the Flag and Deathmatch along with 7 unique maps - Engage the enemy on the ground using a variety of human and alien weapons and vehicles, and also in space where you will be required to pilot an advanced space fighter while dodging enemy missiles and stray asteroids - And much more!
http://www.waltsgames.com/Demos/Armada2250Demo_Setup.exe - 8Mb - Download - Screenshot

Jack of All Trades
Explore the galaxy in search of fame and fortune in this exciting new space adventure game. Become a trader, bounty hunter, rebel, stock market guru, or even a deadly space pirate. Buy from a large selection of ships including freighters, fighters, and capital destroyers. ... Once you have earned enough cash you will likely want to set your sights on something grander: saving the galaxy itself. ... The various governments and guilds are at war with one another. ... Something needs to be done. ... Are you up to it Captain?
http://www.dingogames.com/jack/jackdemosetup.exe - 2Mb - Download - Screenshot

Galacticards (Linux)
Galacticards is the new Addictive Card Based Space Strategy Game of Exploraiton and Expansion. In Galacticards, five players start out with a home world, some defensive ground units, and a hand of five cards with which they begin their struggle to become the largest species in space. ... Players must make choices every turn to improve their situation, or defend against possible raids from one of four other players, as well as pirates, space monsters and aliens. ... The final objective for each player is to have had the most members of their species throughout the game.
http://killerbeesoftware.com/kbsgames/demos/GCDemoLinux.tar.gz - 16Mb - Download - Screenshot

Galacticards (Windows)
Galacticards is the new Addictive Card Based Space Strategy Game of Exploraiton and Expansion. In Galacticards, five players start out with a home world, some defensive ground units, and a hand of five cards with which they begin their struggle to become the largest species in space. ... Players must make choices every turn to improve their situation, or defend against possible raids from one of four other players, as well as pirates, space monsters and aliens. ... The final objective for each player is to have had the most members of their species throughout the game.
http://killerbeesoftware.com/kbsgames/demos/GCDemoWin.exe - 16Mb - Download - Screenshot

Jack of All Trades (for Mac)
Explore the galaxy in search of fame and fortune in this exciting new space adventure game. Become a trader, bounty hunter, rebel, stock market guru, or even a deadly space pirate. Buy from a large selection of ships including freighters, fighters, and capital destroyers. ... Once you have earned enough cash you will likely want to set your sights on something grander: saving the galaxy itself. ... The various governments and guilds are at war with one another. ... Something needs to be done. ... Are you up to it Captain?
http://www.dingogames.com/jack/jackofalltradesdemo.dmg - 4Mb - Download - Screenshot

Galacticards (MAC OSX 10.3+)
Galacticards is the new Addictive Card Based Space Strategy Game of Exploraiton and Expansion. In Galacticards, five players start out with a home world, some defensive ground units, and a hand of five cards with which they begin their struggle to become the largest species in space. ... Players must make choices every turn to improve their situation, or defend against possible raids from one of four other players, as well as pirates, space monsters and aliens. ... The final objective for each player is to have had the most members of their species throughout the game.
http://killerbeesoftware.com/kbsgames/demos/GCDemoOSX.tar.gz - 16Mb - Download - Screenshot

Buccaneer Slots
A pirate's life sooner or later finishes with troubles. This rule works even in the game Buccaneer Slots. A bandit with only one hand had been trying the fortune for many years. There was no man to catch him; there was no ship to overtake his ship. All his treasures were hid on a remote island. ... What an awful end of a pirate's career! ... You have got a chance to win money in a game with pirate only by pulling a handle. ... The designers of this game give you an opportunity to enjoy the unique graphics of a likable game space and guarantee the maximum pleasure from the game.
http://www.doublegames.com/downloads/buccaneerslots.exe - 2Mb - Download - Screenshot

Galleon Slots
A pirate's life sooner or later finishes with troubles. This rule works even in the game Galleon Slots. A bandit with only one hand had been trying the fortune for many years. There was no man to catch him; there was no ship to overtake his ship. All his treasures were hid on a remote island. ... What an awful end of a pirate's career! ... You have got a chance to win money in a game with pirate only by pulling a handle. ... The designers of this game give you an opportunity to enjoy the unique graphics of a likable game space and guarantee the maximum pleasure from the game.
http://www.freegames4rest.com/files/galleon_slots.exe - 1Mb - Download - Screenshot

Flatspace
Flatspace is a modern 3D space trading and flight simulation. The ultimate objective in the game is to locate and assemble parts of a galactic hyperdrive, however there is a lot of freedom for the player and as a space captain, you can decide what you want to do and how you want to play. ... To make a profit you could opt to trade cargo between eerie space stations, or become a space pirate and steal cargo. ... As a space captain you can fly any of over a hundred ships in the Flatspace universe, providing you can afford the price tag.
http://www.cornutopia.co.uk/software/flatspacesetup.exe - 16Mb - Download - Screenshot