Great game, love the retro style.
A lot like DN8, with great medals. I failed cause I didn't even realize that the bytes the things dropped were the cash XD. I also love the retro theme, and how you have many choices in the upgrades menu. I've never really seen a game with this many upgrades in a little game. One thing though is that, after buying the magnet after the second level, on the next level I already had enough bytes for lots of great upgrades such as the most powerful weapon, increased hull, and another upgrade for the magnet. Maybe you could increase the prices to prevent the game from being excessively easy?
Well, I hope you found this helpful. I hope to see more great games from you!