Listing all games similar to Astro Boy - Omega Factor (E)(Endless Piracy)
- Gradius »[MAME] Gradius[MAME] Nemesis[MAME] Nemesis (World?)[MAME] Gradius (PlayChoice-10, older)[MAME] Gradius (PlayChoice-10)[NES] Gradius (ArchiMENdes Hen) (Japan)[NES] Gradius (Europe)[NES] Gradius (Japan)[NES] Gradius (USA)[X68K] Gradius (1987)(Sharp - SPS)[a2][X68K] Gradius (1987)(Sharp - SPS)[a3][X68K] Gradius (1987)(Sharp - SPS)[a4][X68K] Gradius (1987)(Sharp - SPS)[a][X68K] Gradius (1987)(Sharp - SPS)[h2][X68K] Gradius (1987)(Sharp - SPS)[h3][X68K] Gradius (1987)(Sharp - SPS)[h][X68K] Gradius (1987)(Sharp - SPS)[TG16] Gradius (Japan)[C64 PP] Gradius (U)[MAME] Nemesis (World?)[MAME] Nemesis
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