Spending real money to play a game of chance for a reward.
"You can spend the premium in-game currency to roll for “premium baskets” which just give you a random item from any of their previous events, among other uses of this mechanic"
"You can spend money or ingame currency to purchase boxes that have higher level characters and materials."
""Kard packs" contain a random character and other items/bonuses. These are purchased using in-game currency ranging from 150 souls to 400 souls."
"BIG YES. Tier 10 reward vehicles with 2% drop rate at most in loot boxes for up to 10$ per box. Daily boxes that give randomn items that can also be bought with premium currency."
"I can’t think of a fair way to get desired items without loot boxes. The ceo admitted that the odds of this are artificial and are really meaningless."
"As Rōblox is a platform of games (rather than a single game in itself), developers are allowed to implement gambling mechanisms. However, Rōblox had recently enforced a rule that requires developers to disclose probability information for each 'loot-box'. https://devforum.roblox.com/t/guidelines-around-users-paying-for-random-virtual-items/307189"