The SPI is the Air Rivals' cash.It's used to buy new items,new skills,upgrading skills,to repair your gear when you are killed,for supplies and more...
Your can earn SPI from missions and killing enemies.
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The SPI is the Air Rivals' cash.It's used to buy new items,new skills,upgrading skills,to repair your gear when you are killed,for supplies and more...
Your can earn SPI from missions and killing enemies.