Xeno Crisis is a new, original title for the Sega Mega Drive / Genesis and Dreamcast which will be released both as a physical cartridge and also as a downloadable ROM. At its core, it's an arena shooter for up to 2 players that takes inspiration from the likes of Smash TV, Contra, Mercs, Granada, Alien Syndrome, Zombies Ate My Neighbours, Chaos Engine, and Shock Troopers.
Here's a short trailer for Xeno Crisis we made for our Kickstarter campaign, demonstrating some of the gameplay.