Listing all games similar to Gun Force II (US)

Contra: Hard Corps »
[Genesis] Contra - Hard Corps (USA, Korea) [Hack by MIJET v20080924] (Enhanced Editon)[Genesis] Contra - Hard Corps (USA)[Genesis] Contra - The Hard Corps (Japan)
Contra »
[MAME] Contra (US, Set 2)[MAME] Contra (bootleg)[MAME] Contra (Japan bootleg)[MAME] Contra (Japan)[MAME] Contra (US, Set 1)[MAME] Gryzor (Set 2)[MAME] Gryzor (Set 1)[MAME] Contra (PlayChoice-10)[NES] Contra (USA)[NES] Gryzor (Japan) [En by MadHacker v1.0] [Fix by g8z et al] (Contra Version)[NES] Gryzor (Japan) [En by MadHacker v1.0] [Fix by g8z et al] (Gryzor Version)[NES] Gryzor (Japan)[C64 PP] Contra (U)[C64 PP] Gryzor (E) [alt][C64 PP] Gryzor (E)[C64 Tapes] Gryzor (E)[ZX Spectrum Z80] Gryzor (1987)(Ocean Software)(128k)[a][ZX Spectrum Z80] Gryzor (1987)(Ocean Software)(128k)[ZX Spectrum Z80] Gryzor (1987)(Ocean Software)[a][ZX Spectrum Z80] Gryzor (1987)(Ocean Software)[ZX Spectrum (TAP)] Gryzor (1987)(Ocean Software)(128k)[CPC] Gryzor [t1] & Combat School Demo (UK) (1987)[CPC] Gryzor (UK) (1987) [a1][CPC] Gryzor (UK) (1987)[CPC] Gryzor (UK) (1987) [t1][MAME] Contra (Japan bootleg, set 2)[MAME] Contra (Japan bootleg, set 1)[MAME] Contra (Japan, set 2)[MAME] Gryzor (set 2)
Gunstar Heroes »
[Genesis] Gunstar Heroes (Europe)[Genesis] Gunstar Heroes (Japan) (Sample)[Genesis] Gunstar Heroes (Japan)[Genesis] Gunstar Heroes (USA)[Game Gear] Gunstar Heroes (Japan)
Gunstar Super Heroes »
[GBA] Gunstar Super Heroes (J)(WRG)[GBA] Gunstar Super Heroes (U)(Trashman)
Metal Slug X: Super Vehicle - 001 »
[MAME] Metal Slug X - Super Vehicle-001 [PSX] Metal Slug X [NTSC-U][PSX] Metal Slug X - Super Vehicle-001 (Japan)[NeoGeo] Metal Slug X: Super Vehicle-001 [MAME] X-s (Bwb) (MPU4)[PSX2PSP] Metal Slug X (USA)[MAME] X-s (Bwb) (MPU4) (set 2)[MAME] X-s (Bwb) (MPU4) (set 3)[MAME] X-s (Bwb) (MPU4) (set 4)[MAME] X-s (Bwb) (MPU4) (set 5)[MAME] X-s (Bwb) (MPU4) (set 6)[MAME] X-s (Bwb) (MPU4) (set 7)
Metal Slug 3 »
[MAME] Metal Slug 3 (not encrypted)[MAME] Metal Slug 3 [NeoGeo] Metal Slug 3 (Not Encrypted)[NeoGeo] Metal Slug 3 (Not Encrypted P, Decrypted C) (Non-MAME)[NeoGeo] Metal Slug 3 [PS2] Metal Slug 3 (Europe) (En,Fr,De,Es,It)
Metal Slug 4 »
[NeoGeo] Metal Slug 4 (Decrypted C) (Non-MAME)[NeoGeo] Metal Slug 4 [PS2] Metal Slug 4 (Japan)[PS2] Metal Slug 4 (Europe)
Metal Slug 7 »
[NDS] Metal Slug 7 (J)(XenoPhobia)[NDS] Metal Slug 7 (U)(XenoPhobia)[NDS] Metal Slug 7 (E)(EXiMiUS)[NDS] Metal Slug 7 (KS)(CoolPoint)
Metal Slug Anthology »
[PS2] Metal Slug Anthology (USA)[PS2] Metal Slug Anthology (Europe)[PSP] Metal Slug Anthology (Europe)[PSP] Metal Slug Anthology (USA)