S.F.77
Use your space fighter (S.F.77) to destroy enemy spaceships and collect energy from them. Use that to upgrade you speed, weapons, or improve shields which will allow you to survive even harder attack waves.
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Use your space fighter (S.F.77) to destroy enemy spaceships and collect energy from them. Use that to upgrade you speed, weapons, or improve shields which will allow you to survive even harder attack waves.