The (Edit June 26th: latest entry in the) Hotline Miami franchise was released a little over a year ago, and it was quite popular with both fans and critics. It is a fast-paced, top-down action game that is unforgiving enough that it tends to feel a little bit like a puzzle game as well, at least to me, in the sense that you need to figure out how to catch enough NPCs off-guard to easily and quickly take them out. As such, level design should have a huge impact on gameplay.
And now users can make their own maps. Dennaton Games and Devolver Digital have released the level editor in today's patch. If you don't like user-generated fun, or you experience bugs or something, then you can stay on Hotline Miami 2 version 1.05.
Hotline Miami 2 and Hotline Miami 1+2 combo are both 75%-off for the rest of today.