Space Warrior
Space Warrior is developed with children of ages below 13 in mind. Although this game is full of fun and excitement and even Adults will have great time playing this game. There are two modes of playing 1)This is a Quest mode in it your game will drastically change after every Level. ... Minimum System Requirements 10 MB free disk space Pentium 2 or higher processor 32 MB RAM Space Warrior is a 2D space shooter game. ... Enjoy! ... Game is little easy to play but requires skills to control the player.
http://store.eSellerate.net/s.asp?s=STR011432318 - 3Mb - Download - Screenshot

Star Reaver
Star Reaver is a freeware arcade style space shooter game, available for free download. Defend your ship from dive bombing alien space invaders. Grab the power ups for powerful new multi-directional weapons that shred the marauding invaders. Free download available for PC and Mac.
http://www.freewareshareware.net/download/sr.exe - 2Mb - Download - Screenshot

Gunstorm
Gunstorm is a single screen space shooter. Mouse or keyboard controlled, Gunstorm is a top down arcade game where the player must ascend through ever-changing levels of alien waves, meeting different guardians along the way. Several game types are available, including a superb Asteroids inspired... Fully 3D and using the Cornutopia Hector graphics engine, Gunstorm represents the most advanced game in a series of releated shooter titles stretching back to 1992. ... Different weapons and enemy combinations, and different level types and guardians have all been extensively adjusted to make...
http://www.cornutopia.co.uk/software/taskforcesetup.exe - 3Mb - Download - Screenshot

Star Storm
An online fast paced space shooter featuring 25 levels of play divided into 5 phases. Blast your way through waves of enemy spacecraft, avoiding mines and asteroids. Play offline or add the game to your own website.
http://www.devcode.co.uk/dload/StarStorm.zip - 326Kb - Download - Screenshot

Acamar Rising
Acamar Rising is a 3D space shooter where a lone fighter must defend a space station against the many threats of space, from asteroids to aliens. The fighter pilot who defends the station may be lone, but he isn? t without some hefty resources at his disposal. ... t be anywhere to left to dock! ... Also alien crafts will continuously assault and harass the defenses, along with the occasional mother ship. ... Let too many of these items past and there won? ... With four power-ups to be found in asteroids and 8 different weapons to purchase, the defending ship will go from bucket of bolts to...
http://www.beteogames.com/acamar/AcamarSetup.exe - 16Mb - Download - Screenshot

Attack of the Little Green Men
The people of Earth are in a panic! A gigantic spaceship has been ominously hovering over the planet for two days now! The world waits nervously, not knowing if the occupants mean them harm. But unknown to anyone, NASA has been developing the world's first space fighter ship for several years. ... Go on the offensive against bizarre enemy aliens in this action-packed side scrolling space shooter that mixes the familiar old school gameplay with amazing 3D graphics and surround sound that completely suck you in.
http://www.fun3dgames.com/download/LGMv12Trial.exe - 1Mb - Download - Screenshot

Hurricane
In this retro space shooter, invading aliens have used taken your base captive during a furious hurricane. Now it's up to you to save your basemates. Destroy waves upon waves of enemies, grab fun power ups, and don? t be afraid to use your mega bomb!
http://content.gametrust.com/games/gt/hurricane2.0Setup.exe - 7Mb - Download - Screenshot

AstroRaid
Add one part Space Invaders and one part Galaga, then shake with twist of Asteroids to get AstroRaid, a modern version of an arcade space shooter. The fate of humanity is in your hands! The Earth is in the danger of being destroyed by a fast spreading alien virus that kills anybody it infects. ... First, someone tried to kill you while you were inside the space station. ... The only hope is a vaccine that was developed on a remote space station by our scientists. ... Just keep your thumb close to the Fire button.
http://www.gamerange.com/files/astroraidinstall.exe - 2Mb - Download - Screenshot

Mitigo9
Mitigo 9 is an old school, side scroll shooter, where the player has to fight against enemy ships, giant insects, tanks, robots and more. To help the player in this mission, there are twelve different upgrades, which can be combined in lots of different ways. ... You'll see action in different locations like space, forests, deserts, ruined cities, asteroids and more!
http://iluminategames.com/demo/Mitigo9Demo%20Setup.exe - 16Mb - Download - Screenshot

Zirconia 2: Battle
Zirconia 2: Battle is a unique 2D "space" shooter not set entirely in space. In this game, you and a computer-controlled opponent are playing vertical scrolling shooters, split-screen style. You must defeat 7 different opponents indirectly by using cards that you will draw throughout the course... 5 cards will then added to your deck automatically, and you can choose 5 more cards from a reward card pool. ... When you defeat an opponent, you will receive upgrade points for permanently improving the stats of your choice.
http://www.z2games.com/zirc2battleInstaller.exe - 16Mb - Download - Screenshot