Retro Power Pack
Retro Power Pack is a compilation of four classic Arcade games encompassing the popular 80's genres: shooting banks of aliens, intercepting missiles, munching dots, and blasting things that split apart in space. Vector Invaders, Patriot Command, Mega Muncher and Spheroids all appear in authentic... Compete with players from around the world for a place on the high score table, which is shared over the Internet amongst all players.
http://www.sweetness.net/Retro-Setup.exe - 2Mb - Download - Screenshot

Frenesia
If you like intense arcade action, and you're an excellent shmup player, Frenesia just might be for you. I'm not going to lie. You HAVE to be really good. Are you really good? Remember: THINKING you're good is NOT the same as BEING good. Frenesia is a fun and addictive retro arcade Shoot em Up... Ready? ... You're on your own. ... Musical Note: Like the music?? ... If you can pass Level 9, you'll hear a different music track. ... Hate the music? ... Hey, but don't blame me for your addiction. ... And you'll like that!
http://www.macgamesandmore.com/games/frenesiasetup.exe - 7Mb - Download - Screenshot

Ultratron
The last human is already dead, slain by evil killer robots! As the last remaining humanoid battle robot, you must avenge the human race and destroy the four bots of the Apocalypse. Pick up powerups on your way to help you out. Fast action retro arcade game based on Robotron. ... Play for hiscores and glory!
http://www.puppygames.net/downloads/SetupUltratronDemo.exe - 6Mb - Download - Screenshot

Cosmic Defender
Based on a classic arcade retro game, this side scrolling shooter is pure addictive endless fun. Destroy the invading aliens and save your brethren from abduction. Compete against other players via the Internet high score board. Free game with no spyware brought to you by 2DPlay.
http://www.2dplay.com/cosmic-defender/CosmicDefenderSetup.exe - 891Kb - Download - Screenshot

Asteroidia
Rock on with this 2D retro shoot-em-up! Asteroidia features fast paced action with colorfull graphics and explosive sound. Enhancements and 2 modes of play, make this classic more fun then ever! 60 levels of high octane arcade blasting fun you'll want to come back for a "quick fix" over and over... Get this program for free when joining the JGOware Software Membership!
http://jgofiles.com/download/jgoastrd.zip - 3Mb - Download - Screenshot

Titan Attacks
Save the Earth from evil alien invaders from Titan! Fight your way across the solar system to defeat the aliens on their homeworld. Upgrade your ship with bigger guns from bounty money. Defeat the alien mothership! Fantastic retro arcade action over 100 levels with 5 worlds.
http://www.puppygames.net/downloads/SetupTitanAttacksDemo.exe - 7Mb - Download

Roidulous
Roidulous is a retro style 2D arcade game based on the classic Asteroids. But it goes much further than just another asteroids clone. You get massive amounts of stuff to shoot at and destroy. Plenty of eye candy, explosions, powerups, new weapons, etc! ... Why not try the free trial right now? ... Get this program for free when joining the JGOware Software Membership! ... If you enjoy a fun 2D game that's easy to pick up and play this game is for you. ... Because the action is so frantic it's kind of like Robotron meets Asteroids.
http://jgofiles.com/download/RoidsSetup.exe - 6Mb - Download - Screenshot

3D Dragon Castle
Are you a fan of classic video games? In 3D Dragon Castle, the new retro arcade game from MVP, you get tons of video game excitement, in glorious 3D graphics. The action is fastpaced and builds through each level. Clear each castle by destroying the enemy dragons and monsters while avoiding... Kids love 3D Dragon Castle and adults do too. ... Unlock secret passages and earn points by collecting magical treasures.
ftp://ftp.mvpsoft.com/pub/3ddragon.exe - 5Mb - Download - Screenshot

Excessively Free Internet Games
Excessively Free Internet Games is a comprehensive online game collection. There is no signup process or complicated steps to get started, and no charges... just a simple way to play Internet games for free! Action, adventure, arcade, casino, fighting, humor, puzzles, racing, retro, shooting,...
http://64.34.164.24/setup_efg.exe - 1Mb - Download - Screenshot

3D Caveman Rocks!
Are you a fan of classic video games? In 3D Caveman Rocks, the new retro arcade game from MVP, you get tons of video game excitement, in glorious 3D graphics. Caveman is looking for Stonehenge. Caveman like Stonehenge. But caveman no like evil monkey, sticky cactus, bad bird, pointy rhino,... Help Caveman reach Stonehenge and advance to the next level. ... Kids love 3D Caveman Rocks and adults do too. ... These things bad.
http://download.mvpsoft.com/3dcave.exe - 7Mb - Download - Screenshot