Differences Between Versions
Multiple player options for the DS version have already been mentioned above, but in gameplay terms both versions are the same, sharing the same levels, attack formations, similar graphics, and power-ups. However, the PSP version has crisper graphics due to the higher resolution implemented on the PSP. Also, while the DS version has a soundtrack composed and performed entirely by Taito's in-house sound team Zuntata, the PSP version features music from a guest group of external composers and DJs. The obvious main difference between the two is the use of the second screen on the DS version. This is used to make certain levels, specifically Bonus Rounds and Boss Battles, vertically larger. When not used for this it contains assorted information on the game currently in play. The Nintendo DS version can also use the Nintendo DS Paddle Controller which was originally designed for Arkanoid on the DS, or the DS Rumble Pack, adding force feedback to the game's music.
In addition to the peripheral support, the DS version features many modes of online play not available to its PSP counterpart; the game can be played against random players and friends over the Nintendo Wi-Fi Connection, and top scores can also be shared over the internet. Also, single-card download play is available for local multiplayer. The PSP version only supports multiplayer locally in Ad-Hoc mode, and each player must have their own game disc. No Infrastructure modes are supported for online play or high score tables.
The Xbox Live Arcade version has many of the networking features of the DS version with the addition of a co-op mode where up to four players can play the arcade mode. It also uses background visualizers as created by Llamasoft's Jeff Minter.
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