This was a fun game to make, and the first gm48 where I composed unique music, wrote and used my own shaders, and sat down and took it seriously. I stayed up for more of the 48 hours this time than I have in the past couple years of the jam.
I was concerned when the theme first came out: I didn't have any ideas cool or unique enough for me, so I wasted about 10 hours thinking and doing other stuff, until it hit me like a bolt of lightning. I wanted the game to originally be about computer viruses, but as I continued developing I realized that would be a little hard to do.
I would like to say that my planning worked out in the end. I went most of the development getting the player controls, effects, and game loop right, and actually programming in more enemies kinda took a back-burner. By the last day I did add as many enemies as I would've wanted, though. It was a little tricky balancing my time working on the three stages as well as the title screen, even though the title was much easier.
I'm happy with the end result. I'm afraid the game wouldn't make sense right away, or that the difficult increase is too sharp, or players wouldn't be able to grasp the controls, but based on player feedback it seems like those aren't fair concerns to have, and by having them I created the long and boring text tutorial, which is the one thing I would go back and change. Other than that, I love it and am super satisfied with it!