More unsolicited advice: A prestige mechanic can be a good way to increase re-playability, whereby current progress can be traded for future boosts. I play(ed)

More unsolicited advice: A prestige mechanic can be a good way to increase re-playability, whereby current progress can be traded for future boosts. I play(ed) a game called Sky Force 2014 that would have benefitted from a prestige mechanic.