Onion Rings are an ingredient used in various Papa Louie restaurant time-management games.
In Papa's Burgeria HD, Fried Onion Rings are one of fifteen standard toppings, the last to be unlocked in the game. It is available when a player reaches Rank 14.
In Papa's Burgeria To Go!, Onion Rings are one of seventeen standard toppings, the eighth to be unlocked in the game. It is available when a player reaches Rank 14.
In Papa's Pizzeria HD, Onion Rings are a holiday-exclusive pizza topping that customers can order during the Starlight BBQ celebration. It is unlocked at Day 4 of the holiday.