Carrion (You're a writhing mass of sludge worms looking to eat some decent human meat)

Becoming the monster turned out to be rather underwhelming. Imagine being a sapient mass of worms only to be forced to solve puzzles

 PR: An unknown military facility is designing biological weapons, unrestricted, in the middle of the city. 

To no one's surprise, something goes wrong and they create (ominous voice) "the carrion", AKA Reddy, for further clarity.

 Leaving aside the utter carelessness that these "scientists" have going on within their base, with contrived mechanisms that are more prejudicial to humans than to Reddy. We're talking turrets that shoot people, suicide drones that end up damaging more their alies than the enemy, the mecha that hit all the other humans before even coming close to hit the monster, doors that put the defense too far from the civilians, makeshift barricades and easily bypassable quarentine steel doors, not to mention that they're operating on top of a nuclear waste deposit, with unrefrigerated bars of uranium that if Reddy hadn't ate them this facility would be the next Chernobyl, or the bio-weapon samples they just leave around for Reddy to assimilate... Ok, I was going to say they were brilliant, having created Reddy and all, but on hindsight, "brilliant", hmm.

 Anyways, you play as Reddy, munching people and solving puzzles to get more people to munch on, acquiring mutations such as mind control or getting extra spikes until eventually, you gain the ability to "become human" and get out of the facility onto the city, giving us the expected "It walks among us" ending.

 There are a few flashbacks about some research team that's hilarious because there's three of them and two just wait for one to do all the job, like "Oh, the doors stuck. Steve?" and just sit on their asses as Steve goes into the depths of the the abandoned facility full of skeletons of people who died mysteriously, jumping and running trying to find a way to to open said door.

   The game is pretty dynamic, though the lack of a map or concrete objective-based navigation tool makes it a bit of a chore when you have to backtrack guessing what the correct path is. I solved this by looking at the wiki.

 The concept of being the monster is good, but I think the combat is a bit lacking. You feel very powerful, but as one of my predecessors said, "Combat just revolves around sneaking by armed enemies and flailing them around until they die(...) It does get exciting being the monster in the horror scene, crashing through doors and hiding in vents, but at some point that mindset tires out and it just becomes a light stealth game for when you need to kill, with a bunch of puzzles in between."

 This expression of frustration comes after playing the game for an hour, hour and a half, halfway through the story, Carrion had exploited all the resources it had to give. Still, fun for that hour or so, and it's not that long, so thumbs up. 

The lore is kinda dreadful