What is Riot Games' single player game that was released in 2021?
Ruined King: A League of Legends Story
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is Riot Games' single player game that was released in 2021?
### Input: 
### Response: Ruined King: A League of Legends Story