Imagine a Nintendo Contra-style game doing a parody of 80s and 90s action flicks. This is what you can do with Broforce. Simple premise, lots of fun.
The demo is playable online (as well as downloadable). It takes a bit of time to load and you best takes a few seconds to set up the 7 required keys.
http://www.freelives.net/BROFORCE/BROFORCE_WEB.html