Planet Puzzle League review at Pocketgamer.co.uk.

"Easily beating out Captain Planet and the Planeteers for the crown of dorkiest association of brainy do-gooders, Planet Puzzle League calls forth worldwide puzzle fanatics for a crusade against boredom. Alongside Picross DS, it's also the latest addition to Nintendo's Touch! Generation series of games that attempt to extend the DS's casual appeal with simple puzzle gameplay beefed up by online multiplayer (at least it is in the US, as the game's not yet confirmed for Europe).

Flipping your Nintendo DS on its side to play, the goal in Planet Puzzle League is to clear blocks on the touchscreen by aligning three or more of the same colour, after which they disappear. You can only move one block at a time, sliding it horizontally. Blocks of six colours (red, yellow, green, blue, purple, and gray) push up from the bottom of the touchscreen and once the six by 12 block screen fills up, your game ends."

Full Source: Pocketgamer.co.uk