Inside of 10 minutes, you've experienced everything there is to see in TrionCube's gameplay. It doesn't evolve beyond what it initially presents you with: very simple falling block puzzle gameplay. The graphics are Japanese-y cute and refreshing, the story goofy, and the "unlockable" items useless . . . but none of that matters if the core gameplay starts to bore you before the 15 minute mark.
Interestingly, the core gameplay is much more fun if you play two-player vs. mode with someone else. And I do have to give the game credit for supporting two-player mode single-card play. But, I still can't recommend this game, even to puzzle game fans (like Commander Video).
I would recommend it to young kids (6-9), as it is simple enough that they'll be able to understand it and play all the way through it without much frustration.
Game Title: TrionCube
Platform: Nintendo DS
Publisher: NamcoBandai Games America
Release Date: 20th Feb 2007