...is most definitely a Treasure game. It is HARD.

While it has no Story mode and no Campaign it does have a ton of increasingly difficult stages, and it is oh so satisfying when you finish one. Theres a surprising amount of strategy involved with each area, for the most part you can't just fly around guns ablaze hoping you finish the stage. The other surprising bit is that for such a hardcore shooter its not all that frustrating when you die in the middle of a stage, since the game is that much fun to play.

Sharp control + Guns + Explosions = AWESOME.

If you have a DS and are a fan of sh'mups I highly recommend picking this one up.