Contra on GB yɛ saa game boy ports a ɔkwan bi so no wotumi de chaotic energy a ɛwɔ arcade original no mu no hyɛ saa green screen ketewaa no mu biako. Wode saa tuo a wɔatrɛw mu a wɔtaa de di dwuma no na efi ase —efisɛ momma yɛnka nokware, obiara npaw biribi foforo biara —na ntɛm ara na asraafo, turrets, ne saa krak robɔt ahorow a ɛyɛ nwonwa a ɛpae bere a woto wɔn tuo no ayɛ no ma.

Nneɛma a wɔde di dwuma no yɛ den, nanso screen crunch no yɛ nokware —ɛtɔ mmere bi a, atamfo no bɛn dodo, na wobɛwu mpɛn kakraa bi a wubehu baabi a atuo no fi ara kwa. Nanso, biribi wɔ hɔ a ɛma abotɔyam wɔ nsusuwso ahorow a wobɛkyere agu wo tirim, a ɛrepiapia ogya asorɔkye a atwam a atwam no mu, na awiei koraa no woreboro saa panyin biako a ɔsɛe wo mpɛn anum a ɛtoatoa so no.

Ɛnyɛ sɛ ɛyɛ mmerɛw te sɛ NES version no, nanso sɛ ɛyɛ kotoku mu contra fix a, ɛma adwuma no yɛ. Kɛkɛ a, nhwɛ kwan sɛ wobɛbɔ no wɔ wo mmɔdenbɔ a edi kan no so.