Splash Damage might be busy with Extraction and Batman, but before either of those were a twinkle they were doing something else that wasn't Brink: Rad Soldiers. Actually, strictly speaking, this wasn't Splash Damage, it was Warchest, their spin off. But much the same talent pool... Anyway, it's on the Chrome store now, which means you can play it on your home computing device of choice. I'm doing it right now! I can report it's moderately entertaining cartoon turn-based combat, with jokey happenings.
There's a trailer around here, too.