Bomberman Land preview at 1up.

"Compared to the other new Bomberman Land games for Wii and DS, the PSP one -- called Bomberman Land Portable in Japan -- is rather standard. Most of the traveling is done on a world map, where you visit a certain area to play a minigame or answer someone's plight. Even the battle modes look to be the same ones the Wii version offers. On the other hand, some of the minigames take on a humorous tone, like the math quizzes or the panicky toilet paper-rolling. If only the miniature Bomberman character acting as your sidekick wasn't so creepy..."

Full Source: 1up