Someone was talking about Sonic 1 8 bit's lack of level select in another thread and this got me messing around with some of the other games level select screens. It got me wondering why Sonic 2 ended up with such a pleasant UI for what is essentially a debug feature. The animated background (obviously reused from the options menu but its still there), the cute little graphics for each zone, the sound test. It all comes across like you were meant to find it and enjoy using it. Compare to something like CD which just uses a basic list of codes in the middle of a static background or Spinball which has no menu at all. I think its a great little feature and I'm not surprised it was reused for Sonic 3 / & Knuckles and ultimately Mania and the remasters.