Good port and i am really happy to see a good version of this famous puzzler on the C64 now, because i play the SNES, GBA and N64 versions regularly and really love them, especially the N64 version is a highlight, with all it's different play-modes. Three suggestions/questions for the new C64 version, i would have.
(1) When the player speeds up the pill descent, the pill could fall a little bit faster (compared to other versions of the game, where that is the case) and the pill also falls jerkily.
(2) These somewhat jerky movements of the pills are also my second point, because this sometimes make it difficult, to turn a pill correctly in time, when you are at the beginning of higher levels (lv19 or lv20 for example). Would it be possible, to implement this falling movement of the pills a little less jerkily, i mean in a more smoothly movement?
(3) An integrated "2-player mode" and additional CPU-players for this mode, would have been fantastic. Is there a chance, that this comes in a later v1.1 of "Dr Maria"? Playing the 1-player levels already is fun, but the best you can get out of this puzzler, when playing it against another human player or against a good CPU-player, like it is possible for example in the SNES, GBA and N64 versions of "Dr. Mario". I know, that this is stronger hardware, but maybe something like this could also be realized on the C64 version?