Listing all games similar to Over Horizon (Europe)

Life Force »
[NES] Life Force (USA)[NES] Salamander (Japan)[TG16] Salamander (Japan)[C64 PP] Salamander (E)[C64 Tapes] Salamander (E)[ZX Spectrum Z80] Life (1982)(Psion)[ZX Spectrum Z80] Salamander (1987)(Imagine Software)[a2][ZX Spectrum Z80] Salamander (1987)(Imagine Software)[a3][ZX Spectrum Z80] Salamander (1987)(Imagine Software)[a4][ZX Spectrum Z80] Salamander (1987)(Imagine Software)[a5][ZX Spectrum Z80] Salamander (1987)(Imagine Software)[a][ZX Spectrum Z80] Salamander (1987)(Imagine Software)
Galaga »
[MAME] Galaga (Midway set 1 with fast shoot hack)[MAME] Galaga (Midway set 2)[MAME] Galaga (Midway set 1)[MAME] Galaga (Namco)[MAME] Galaga (Namco rev. B)[NES] Galaga (Europe)[NES] Galaga (Japan)[7800] Galaga
Super R-Type »
[SNES] Super R-Type (Europe)[SNES] Super R-Type (Japan)[SNES] Super R-Type (USA)
Abadox: The Deadly Inner War »
[NES] Abadox (Japan)[NES] Abadox (USA)
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