CREATE TABLE table_66448 ("Year" FLOAT, "Game" TEXT, "Genre" TEXT, "Platform ( s ) " TEXT, "Developer ( s ) " TEXT)

Who was the developer of XCom: Enemy Unknown?
SELECT "Developer(s)" FROM table_66448 WHERE "Game" = 'xcom: enemy unknown'
SELECT "Developer(s)" FROM "table_66448" WHERE "Game" = 'xcom: enemy unknown'