Surprisingly fun puzzler even if I'm not that good at it. Don't know why Taito never bothered to port it beyond the PS1 (and PS3/PSP/Vita by extension since the PS1 version is on JP PSN).
I played the arcade version VS mode - Pretty fun puzzler, kind of a bust-a-move meets puzzle fighter, where you're building up large sections and choosing to clear.
no idea how you're actually supposed to play but i really enjoy this is in a "i'm 6 years old and the colors are pretty and i like when it does the flashy thing that goes woosh" way