I have a fairly sketchy history of what, for want of a proper genre name, we’ll call Alien Breed-like games. They’re top-down or isometric shooters in which you contend with onslaughts of skittery or lumbery alien enemies, while hoovering up weapons and ammo and dashing about opening doors. They peaked, I think it’s fair to say, with Frozenbyte’s Shadowgrounds and Shadowgrounds: Survivor, and Valve’s freebie Alien Swarm in 2010 gave us the best co-op incarnation of the form. But despite being able to pluck out examples from various years (not least Sigma Team’s series of Alien Shooter and Zombie Shooter series spanning a decade of releases) it still seems a very under-served format, not least in terms of experimentation and evolution.
Solstice Chronicles: MIA [official site] arrives to offer an attempt at the former, but unfortunately doesn’t much succeed at the latter.