Very simplistic, but extremely fun! It feels like the perfect arcade game, and I can definitely see it with a scoreboard in the future with everybody competing to be at the top. The different weapons and upgrades add a lot of variety to the game. The only complaint that I have is that it's hard to see enemy projectiles in later stages when the background color changes, it would be nice if they maybe had an outline, were bigger or if there was an option to change the colors. Honestly, I am enjoying this game too much and will probably be playing it in my lunch hour at work xD