Write SQL query to solve given problem: What platform is the game 3Xtreme available on?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T2.platform_name FROM game_platform AS T1 INNER JOIN platform AS T2 ON T1.platform_id = T2.id INNER JOIN game_publisher AS T3 ON T1.game_publisher_id = T3.id INNER JOIN game AS T4 ON T3.game_id = T4.id WHERE T4.game_name = '3Xtreme'