If you're even remotely familiar with SUDA51's work, then it shouldn't come as too much of a surprise to hear that Killer7 is a rather unique combination of somewhat clunky gameplay, bizarre and interesting storytelling, as well as heaps of creativity that ties it all together. It originally released for the PlayStation 2 and Gamecube, and after quite a long delay, it has now finally made its way to PC as well!
While the recently posted trailer won't exactly tell you what to expect in terms of gameplay, it will at least give you a brief glimpse at just what Killer7 looks and feels like. Have a peek, it's a pretty short trailer:
I haven't played the PC version myself, but from everything I've seen so far it would appear that the PC port is a fairly decent one! So if you're up for a game that defies expectations, and one that will likely make no bloody sense until you really dig into it, then I'd say Killer7 is well worth a closer look. It's definitely not a game for everyone though, so do make sure to do a bit of research before opening your wallet.
Speaking of which, you can learn more about Killer7, as well as grab the game itself, by visiting Steam. Have fun!