Keep It Together is a pulpy zombie rpg that digs into the complexity of being a still-living corpse.
It's 5 pages, with an excellent, clean, and visually cohesive layout.
Mechanically, it's played with a d6 and a d8. The d8 is used to pass checks by rolling at or under a target number. Target numbers are between 1 and 6, and depend on where your limb is. More on that in a second.
As a zombie, your body has slots. Each of the six slots can mount a limb, and where the limb is mounted determines the difficulty of checks associated with that limb. So, for example, your 6 slot is easy to roll under, so if you mount a head on your 6 slot, communication will be an easy task for you.
You can lose limbs, and this cuts down on the kinds of tasks you can attempt, but gives you a bonus per empty slot on certain kinds of aggressive actions. You basically become faster and more dangerous as you shed your encumbering limbs.
When you take damage, you roll and lose a random limb. If there's no limbs in the rolled slot, you die. When you die, you can come back at the end of the scene provided any other party members survived.
I'm dwelling a lot on the mechanics here, but that's because they're genius.
This is the tightest zombie system---and one of the tightest pulp systems---I've seen.
Story-wise, Keep It Together is a bit stranger.
It's not quite body horror. It's definitely not a comedy either. There's significant irreverence to it (rules-wise you can swap out your genitals for a chainsaw,) but it's unexpectedly grounded too.
The GMing section contains a lot of guidance on different possible stories you can tell with the system, from simple B-movie-from-the-zombies'-side-of-things combat scenarios to more complex explorations of the past and attempts at building a new civilization for the risen dead.
Advice is also give on how to check for topics your group might want to avoid---although I think it's worth having safety tools on deck for this one as well.
Overall, if you like pulp and zombie horror and want to look at it from a new angle, or if you like incredible mechanics and want to see what a game can accomplish with just two dice, I'd strongly recommend this. If body horror isn't your jam, this is likely not your game. But if you want to run this a little lower on the ESRB scale, I think it's moddable, and the genitals limb location could be safely replaced with 'torso' instead.