Injustice 2 is the smash-hit new mobile game for the iOS and Android that picks up where Injustice: Gods Among Us left off. There are similarities and differences with this game, but one of the similarities is that you can collect multiple versions of your favorite DC heroes, each of varying rarity. Gems are the premium currency of the game, and will get your team into the rare pantheon, and even if you stay free-to-play the whole time, you can still load up on gems.

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