Galaxy Guard
Your Galaxy is attacked by alien invaders. Your warship was entrusted with an important mission. Infiltrate into the enemy space forces and destroy all command ships that control the military operations. A lot of enemy space fighters and battle planes will stand in your way trying to prevent... Get the chance to equip your ship with new weapon, armor and energy by destroying the enemy ships. ... Sometimes you come across big command ships that are the primary aim of your battle mission. ... Meet different enemy ships that attack you on your way to the target.
http://www.enjoyfreegames.com/files/galaxygsetup.exe - 2Mb - Download - Screenshot

Battle Rush:Tanks
The Elefun Company presents a new game named Battle Rush:Tanks! The game is based on the well-known and well-loved Battle City game, now with 3D technologies. The action takes place in the arena, where you and your enemy appear. You drive a tank, and your aim is to destroy all enemy tanks and... In this case, two tanks will appear in the arena, and both users will be able to defend the base and destroy the enemies together. ... From time to time bonuses, giving you various opportunities, appear in the arena: you can blow up your enemy's tank, you can stop your enemy's tank, you can...
http://www.elefun-desktops.com/try/Battle_Rush.exe - 7Mb - Download - Screenshot

xQuadrature for PALM
Quadrature is a new two player strategy game made by Mark Steere. There are two ways to win in Quadrature: kill enough enemy checkers "squaring" them or get three of your stones onto the enemy "home plate". To "square" an enemy checker, you move to form a rectangle on the board with three of... Quadrature won the American MENSA award.
http://www.setupgroup.com/palm/quadrature.zip - 60Kb - Download - Screenshot

#1 Enemy Detector for 3D Games
It gives you the ability to see through the walls and to discover your opponents long before you start shooting at each other. Thus you will gain a serious advantage by shooting your enemy through the wall or immediately after he comes out of the wall. ... Please make sure that the property 'Renderer', 'Driver' in the video options of your game is set to OpenGL. ... If you reach some very difficult stage of the game you can use our enemy detector to reveal and shoot your opponents before they can do this.
http://www.enemydetector3d.com/downloads/enemydetector3dsetup.exe - 468Kb - Download - Screenshot

Battle At Sea
This game will give you many hours of enjoyment. You control a destroyer at the top of thescreen. You must move out of the way of deadly underwater missiles that are launched from enemysubmarines. You must destroy the enemy submarines by hitting them with depth charges you drop.
http://www.rb59.com/turtle/BAST.zip - 1Mb - Download - Screenshot

Guardian
Guardian features 30 adrenaline filled missions that will push you to your limit and beyond. Beautiful 2D, 3D, and parallax graphics will place you in three totally different worlds, and at times you will be facing well over a hundred simultaneous enemies. ... A huge arsenal of weapons will ensure you have the firepower to bring down the waves of enemy fighters but have you got the skill? ... You will need to defend fleeing civilians, protect allied installations, wreak havok on enemy infrastructure, provide allied marines with close air support, and more.
http://www.superluminal.us/Download.asp?Product=Guardian - 8Mb - Download - Screenshot

Space Skramble
Space Skramble is a unique space shooter based upon the 80's classic Scramble. Players must dodge or destroy enemy missiles shot from the ground. Players also face swarms of enemy saucers that make maneuvering difficult at best. In some levels you assaulted by a storm of fireballs, that are fast... Pilot error is the only (though formidable) enemy. ... Some levels sends the player into obnoxiously tight machine tunnels.
http://www.tccons.com/SpaceSkramble/Space_Skramble_Install.exe - 16Mb - Download - Screenshot

Netrek
Netrek is a free multiplayer online space battle game. Team up to battle with and against people around the world. As a player, you captain different starships to bomb armies, engage enemy ships and invade planets in order to expand your team's space empire and conquer the universe. ... The ultimate goal being to wipeout the enemy race by battling your enemy with the spacecraft of you choice. ... Think again, since you are always teaming up with different people as well as playing against different people, there is always a challenge.
http://www.playnetrek.org/netrek/netrekinstall.exe - 2Mb - Download - Screenshot

AA Defense
In control of six anti-aircraft guns, your task is "simple". Defend your base against endless waves of enemy planes, for as long as possible. - Simple mouse controls, - 2 different types of aa guns, - 3 enemy airplanes and - paratroopers - "get bombed without hangover!
http://www.squaredout.com/aadefsetup.exe - 1Mb - Download - Screenshot

Alien Riposte
Distant future. The Earth is in the war with alien civilizations for the repartition of the Universe. All the forces have been directed onto the occupation of a strategically important and belligerent planet. But the enemy have done a manoeuvre and split up. ... In the fight with the enemy a whole stack of arms and bonuses are going to help you, and you'll hardly fulfill your mission without them. ... Thousands of ships and controllable meteoroids are pouncing at the Earth like a bolt from the blue.
http://fungamesgalaxy.com/files/alienripostesetup.exe - 11Mb - Download - Screenshot