If you can get past the insanely difficult levels, then it's worth it. But the level creator itself justifies a purchase
Now with the level creator. The level creator is very unique. It's a bit complicated though. But once you get the hang of it it's quite fun to use. You can upload your levels, ships, and any other of your creations to the Blast Works Depot via Wi-Fi where others can download your creation(s) and use them for their personal use. It's really fun seeing your creations being downloaded.
Boss Battles. The boss battles in this game are perhaps the most challenging I've ever seen in a 2D side scrolling shooter. That may be a good thing for some who are thirsty for a challenge. As you beat levels on certain modes or difficulties you gain access to Kenta Cho games. That's right. For every task you accomplish which are described in the game you gain access to more games.
Al in all this game is a great addition to any Wii Owner's library. The level editor alone can provide you with countless hours of gameplay.
Track me to stay tuned for more of my reviews! Thanks for reading!