MH was me and Ken back and forthing. I was really into it. It was made by three college students in Alabama and it's by far the best Found Footage thing I've watched, in spite of the amateur acting and low production value (even by FF standards) those guys had a knack for creepy clues and locations, good camera placement and a sense that the antagonist could be anywhere.
The first and shortest season is the best. As they went along the quality levelled off a bit due to overlong entries, drama that clearly went beyond their limited acting abilities, a sense of repeating the same threats and hints and ending up going in circles, a strange protagonist switcheroo due to the main character being sort of a derp, bad use of fake blood, and a sense that the whole thing was taking place in a Charlie Brown neverland where there aren't any cops or adults around.
The recent sequel series, "ECKVA," has managed a couple nice entries, but is proceeding at a snail pace, like one entry every seven months. Ken won't even watch it! The previous attempt at a followup, Clear Lakes 44, was cancelled after about 10 entries due to the breakup of THAC TV, the group of guys making the videos. ECKVA is just being made by Troy Wagner, the leader, who alienated the other members by squandering their finances and not knowing how to run a business. They may or may not have kissed and made up--I've lost track but they are all probably past 30 now and getting a bit old for this s*it.
In 2015 a feature film based on MH went direct to DVD. It featured new characters played by real actors including Guillermo Del Toro clown Doug Jones as Slenderman, but it has little real connection to MH and I think you could probably just skip it, Ken did.