Kind of fun. A few frustrations keep it from being really good.
The good: Nice 8-bit art and soundtrack. Defense/collect shooter mechanics are solid.
The OK: There are some resolution differences like the home station and the health bars that seem odd. The health works, but the station seems out of sync with the rest of the 8-bit graphics. The title has the same problem.
The frustrating: Turning left! The player has a choice to stay near the station in relative safety or go out and collect red orbs for health. That is a great choice for players to make. But then you go out and turn around coming back, effectively you stop shooting at your enemy. This is bad.
This feels like a first attempt and is a really solid try. Some balance with the health:damage and right facing only and we have a winner.