The cores, which are currently only available to Jotego's Patreon supporters, are JTS18 and JTBIOCOM. The former is Jotego's still-in-development Sega System 18 core, which already covers Shadow Dancer and Bloxeed.
Alien Storm hit arcades in 1990, and is considered to be a follow-up to Golden Axe, despite the different setting. It was ported to a wide range of home systems, with the Mega Drive getting a revised version with different levels.
Bionic Commando launched in arcades in 1987, and is unique in being a platform gamer where the main character cannot jump; instead, a grappling arm is used to access higher platforms. The NES version, despite sharing the same title, is a very different game.
If you're one of Jotego's Patreon supporters, you can download the new cores here.
