First players to reach X total XP:

100,000,000	Quack Pot	April 6, 2021	See rest
200,000,000	Quack Pot	May 15, 2021	See rest
300,000,000	Quack Pot	August 13, 2021	See rest
400,000,000	Quack Pot	March 25, 2022	See rest
500,000,000	TBD		See rest