Question: Who does Rockstar Games use as a developer?
SQL: SELECT "Developer" FROM "2-15145039-1" WHERE "Publisher" = 'Rockstar Games';

Question: When Did Microsoft Game Studios release Amped: Freestyle Snowboarding?
SQL: SELECT "Release date" FROM "2-15145039-1" WHERE "Publisher" = 'Microsoft Game Studios' AND "Title" = 'Amped: Freestyle Snowboarding';