What movies were released before die hard?

Based on the verified evidence, Die Hard 2 is explicitly identified as a sequel to Die Hard (1988), establishing that the original film was released prior to Die Hard 2. The evidence confirms Die Hard 2's release date as July 4, 1990, and its status as the second installment in the Die Hard film series. The original Die Hard (1988) would therefore be the primary predecessor, though the provided evidence does not list other films that may have preceded it in release order.