Played on a Genesis via a Mega Everdrive X3

MSM Mod manual visual verification:

Under Ground 1: 18s | Under Ground 2: 18s/36s | Under Ground 3: 56s/1m32s

Sky High 1: 22s/1m54s | Sky High 2: 14s/2m08s | Sky High 3: 29s/2m37s

Aqua Lake 1: 17s/2m54s | Aqua Lake 2: 1m10s/4m04s | Aqua Lake 3: 38s/4m42s

Green Hills 1: 25s/5m07s | Green Hills 2: 26s/5m33s | Green Hills 3: 42s/6m15s

Gimmick Mt. 1: 34s/6m49s | Gimmick Mt. 2: 25s/7m14s | Gimmick Mt. 3: 23s/7m37s

Scrambled Egg 1: 59s/8m36s | Scrambled Egg 2: 41s/9m17s | Scrambled Egg 3: 48s/10m05s