DonPachi (首領蜂 "Leader Bee", abbreviated: DP) is the first game developed by CAVE, and the first entry in the DonPachi series of shoot-em-ups. It is one of the first games in its genre to introduce a chaining system, which would become a well-known staple of the series. Alongside Batsugun, DonPachi is considered to be one of the progenitors of the shooting game sub-genre known as bullet hell. More @Wikipedia
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