The game is around 5 years old, it had its own website. I think it was a flash game, the graphics were pretty ****ed low tech. You piloted a small 2D space ship and destroyed other space ships. When you destroyed them, the parts attached to those ships fell off and you could use them to expand your own ship. They weren't so much as upgrades as they were actual attachable blocks, turrets, and thrusters. At the time they offered a demo version and a pay for version.
I'm not sure about this part but the name may have had the word "captain" or "commander" in it.