Following swiftly on from Boom Boom Rocket
joining backwards compatibility a couple of days
ago, another arcade title is on the way today: Triggerheart Exelica
, a scrolling shoot 'em-up that started life in arcades, then debuted on consoles on the SEGA Dreamcast before making its way to Xbox Live Arcade in 2008.
As always, you can check the full list of compatible titles here