Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
When did Riot Games release their 3D MOBA game?

### Inputs:
table_name: table, columns: ['Developer(s)', 'Release date', 'Required OS', 'Genre', 'Type']

### Response:
SELECT Release date FROM table WHERE Type = 3d AND Genre = moba AND Developer(s) = riot games