Iron Space - description from Softdepia.com:
Iron Space is another wonderful arcade-style space shooter action game from Werner Weingraber created to thrill you down! The plot of the game is more than thrilling: you are to save the Earth and the Humankind!
The aliens attacked our planet and captured the Star Stone that keeps the planet from falling apart. Your Mission is to bring this stone back fighting the 86 waves of aliens, and they won't let you pass unless you blast their fighters, ground their bombers, and destroy their motherships. Iron Space is a real hardcore for all the lovers of shooting games! Play the game and save our Earth!
Iron Space - description from developer:
Iron Space Aliens attacked Earth by surprise and captured the Star-Stone that keeps the planet from falling apart. To save Humankind you have to get it back. 86 waves of Alien Aggressors stand in your way and they won't let you pass unless you blast their fighters, ground their bombers, and destroy their motherships. So be it.
Along your way through asteroid infested space you will pick up weapon upgrades, armor bonuses, and speed goodies. Your ship will get damaged and to continue your mission you will have to fly whatever the spaceship repair shop can spare. You will fire a big anvil-gun against hordes of passing aliens and there will be terrifying bosses spawning new fighters.
You will fly through toxic space that eats away what little armor your ship has and alien resistance will be even more brutal when you approach their homeworld. Good luck, pilot.
Iron Space is a "Free to try" program. You can download and try it for an evaluation period.