What's the difference been Drop 2 and 3? Which is better and why?
Magical Drop III
-Has twice the characters
-Has some control tweaks, such as letting you drop rows into your field manually to make chaining easier and faster, and letting you pick up normal and "special" pieces of the same color together (II didn't let you do the latter as a weird holdover from the first game)
-Pushes "garbage" lines into the opponent's field unevenly in competitive play, the pattern being based on character
-Much more in-depth Vs. CPU mode that changes based on how fast you play
-Replaces a mode where you solve preset puzzles (which was cut in the English versions of II) with a board game mode
-Is much more polished aesthetically
MDIII's better in pretty much every way. Only things in MDII's favor are the aforementioned preset puzzle mode and the fact that it's less obvious that the CPU breaks the rules.