Gunnel Vision was made in 3 days for the Blockjam on Humble Bundle and was developed by Ludosity. It is now available for free on itch.io and is featured in Scrap Pack 4 on Daniel Remar's website.

Gunnel Vision is all about guns. The more guns the better.
Pick up a gun - shoot a gun. Pick up two guns, shot with two guns. Pick up 100 guns - MAYHEM! In Gunnel Vision you don't need an inventory - use your entire arsenal at once until your vision is blocked by it - with nothing left to see but the enemy dead center.