Maybe add custom skins available.
Not just with the Zombies etc that you can purchase. You could integrate a simple pixel art system for skins, maybe a machine ingame that you can purchase for something like 500 gold that allows you to change your skin as you wish. This idea was already used to a degree in the 'races' system, but I think a bit more customization would allow users to express themselves with more than a username. ~halcyonRenegade
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