Write SQL query to solve given problem: How many matches did Rajasthan Royals play in Season 8?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT SUM(CASE WHEN T1.Season_Id = 8 THEN 1 ELSE 0 END) FROM `Match` AS T1 INNER JOIN Team AS T2 ON T1.Team_1 = T2.Team_Id OR T1.Team_2 = T2.Team_Id WHERE T2.Team_Name = 'Rajasthan Royals'