Firefall is an online shooter that is quietly pushing a lot of people's buttons. Which is what happens when you pitch an online, co-op shooter that looks a lot like classic jetpack simulator Tribes.

This trailer for the "massive co-op" PC shooter, due at the end of the year, shows both jetpacks and co-op shooter action in a sci-fi, team-based environment. Again, that's ticking the boxes of Tribes fans.

Me, I just like the fact developers Red 5—led by one of the original designers of World of Warcraft—is using real, raw gameplay footage in a trailer. It's a treat we don't get enough of these days!