For me, Alien Syndrome is an undoubtedly memorable game from the 1980s, thanks to its unique, imaginative and gruesome alien design. Bosses are especially odd and I can only marvel at their creative and twisted nature. So how does this conversion compare to the original game ? Personally, I think Sunsoft did a good job and this port is relatively faithful to the arcade game. Controls are sadly a bit slower overall and the weapon's firing rate is rather sluggish and limited. The color palette is also a bit bland and has lost its original vibrancy. But Sun Soft, despite the obvious hardware limitations, has managed to keep the two-player simultaneous mode, which was a brave and yet successful move despite some occasional sprite-blinking. All in all, Alien Syndrome is a decent conversion and a straight forward run-and-gun shooter that turns out to be rather challenging and fairly unforgiving (much like the original game though).