Nemesis II (ネメシスII, Nemeshisu Tsū), released as Gradius: The Interstellar Assault in North America and Nemesis II: The Return of the Hero in Europe, is the second Game Boy game in the Gradius series.The game was later ported to the Konami GB Collection series of Super Game Boy and Game Boy Color compilations; it can be found in the Japanese Vol. 3 and the European Vol. 4. Like Nemesis before it, these versions were renamed Gradius II for the Japanese Vol.