I encounter a bug/strangeness. In the bonus stages (ghost or fruits) the "G" (speedhack key) isn't toggleable/working. (it is set up like/from the previous maze and can't be changed during these).
If possible in further version, i would also like a "pressing-key speedhack" on a key (maybe S, or H next to G for the toggleable one?) like the Tengen version of PM; to be able to speed-up when pressed and slow-down when released. (it is how i play the speed thing; even if a simple toggle works with training, it is way harder!)
I tried to emulate "press to speed" with Joy2Key (which is what i use to map keyboard keys on games with my old USB twin PlayStation adaptor) with a special press-release function to do that, but it doesn't work sadly. ʕ◉ᴥ◉ʔ
I also play a lot of "survival" (1 live only) on those classic games for short session, and i would be happy to see it in the option menu. (1/survival => (maybe 2 too at that point?) => 3/normal=> 4 => 5/easy) with a leaderboard/topscore for it! ʕ✦ᴥ✦ʔ
Keep up the good work!