Slot Pools and Prizes
Each cost 100 Player Tokens per roll. You can get more PT by participating in events, drawing artwork, selling items in the shop, or buying PT in the shop with credits. When you open the item, you have a chance of getting PT back or a voucher for one of the listed rewards. (Except the Collective Pool Gatcha, which will have three types of vouchers; "None", "2/3", or "Reward". You contact an admin to get your rewards.)
If you get any of the jackpots (last two items for most gatchas), it'll change to a new item to be gotten in future attempts after redeeming.