XenoCrisis for the Mega Drive/Sega Genesis Rom is available for purchase at https://shop.bitmapbureau.com/products/xeno-crisis-sega-mega-drive-genesis-rom-download
Here you can buy the rom or an actual cart for your system of choice.
Support the Developers!
Note: I am controlling both characters I got sloppy on the last stage took some hits and missed some rooms. Still got the S rank for the game though.
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https://www.youtube.com/watch?v=MvzXFGgGmLQ
Haven't played this in so long. I used to so good at this and don't remember the controls being so jacked up. Its probably some sort of lag from the emulator.
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https://www.youtube.com/watch?v=iaX4n8HSh7Q