I really want to recommend this game, because it is Magical Drop, and Magical Drop is one of the best puzzle games out there (1000x better than Bust a Move, which is so meh). And this is Magical Drop, but it's Magical Drop without Puzzle Mode, or the Quest Mode that was added in Magical Drop 3.
All it has available is Versus Mode, either in Story Mode or Online. Which is basically where you play Magical Drop against an npc or other player, to see who can get the most matches the fastest.
Puzzle Mode was just an endless mode by yourself, to see how long you could keep going before the game beat you. It got progressively harder as you went along, and it was the most fun mode in the game.
Quest mode added a small RPG element, or more board game element to the game, although not sure if that would work the same without requiring quarters like the arcade version did.
ANYWAY, for $.99 ($.89 on sale), the game is pretty fun, but without Puzzle Mode, it's just not complete. Until that is fixed, I can't really recommend it.
OH ALSO, this game does not like to run in full screen mode on large monitors, so run it windowed.