It's nice to see a tribute to IWBTG
It was fun, but honestly it did need some work. Mainly the issues others have already pointed out like the spotty hit detection etc. as well as platform detection for double jumps and jumps in general. Also I don't think you made the bullets that left the screen during the sinistar battle delete themselves because it got progressivly more laggy as time went on repeating that battle until I refreshed it. Otherwise a nice tribute, but IWBTG still has miles on this I'm afraid. Good humor though.