Ah, what a gem! Great find in the big bundle. One question: does the game "loop" after Sector 4? Or is there a bigger badder boss of some sort in a later sector? (I regularly manage to clear Sector 4, but 5+ have thus far been beyond my grasp...)
Thank you, I'm glad you're enjoying it! 😀
The game does loop, yes. The bosses get harder and the regular aliens spawn faster, but apart from that it's the same loop.
Around sector 6 and 7 it gets preeeeetty challenging.