The game looks good and played well once the difficulty got high enough. The difficulty was slow at first but got interesting around difficulty 9-10 when enemies started to consistently spawn. There were good reasons to choose either side, but because of the slow difficulty curve blue is the better one because I didn't need the extra health at the start. Overall great visual design (the line from tip to cursor was very helpful with my aim) with gameplay that was slow at first but was solid when it reached its stride.