This brings us to Diadra Empty, which has a rather robust power up system that almost feels like an RPG. Much like latter iterations of Gradius, players must choose their load out at the start of the game. To upgrade their weapons, gain options, and get more speed, players need to collect coins in stages much like in most of CAVE’s shooters. In between stages, these coins can be used to level up shots, gain more speed, or buy Storm Savers.
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