While not the flashiest design wise, I gave full marks for Polish due to the sheer quality and clarity of the content. The writing is clever and thematic, and a user-friendly layout combined with the depth of the mechanics provided makes me confident I could run this after a single read-through. I love the quotes for the NPCs, an example of how much detail and flavor you packed in. I also really like the mechanics to reverse the curse and calling out specific skills. Great work on a clean and streamlined adventure that I can't wait to run! 

As a side note, I also went with an aquatic theme that features infection and transformation, and I love your take on it. I might mash our two modules together the next chance I have to run Mothership. 

The energy in this writing is fantastic, I think it's got a flair to it that draws me right in and gets me stoked to run! The monster life cycle is really well-fleshed out to me and gives me plenty of information to spin off into emergent encounters. Each location on the map is illustrated sensibly and the NPCs have a good spread of motivations to engage PCs/communicate information/stoke conflict. Overall I think this is an excellent manuscript.

Points of improvement:

• Visually, this is very barebones. This does mean it's easy to read and utilize so it's not at all to the detriment of the writing, but with how much personality the writing exhibits I would love to see a comprehensive pass! More colour, more depth, more art. It deserves it! This could help hammer home the sci-fi aspects as well.
• Encounter procedure feels a bit shaky, since there's a flat 10% chance the PCs will run into Dr. Ranier whenever they go somewhere so it's possible they never run into him. Having some kind of escalating chance (+10% each time nothing happens) could help alleviate this!
• Usage of d4s where most Mothership stuff sticks to D5s/D10s/D100s.
• Not sure if IP needs to be its own stat. I feel it could be tied in more directly to a PCs body save to save on cognitive load for Wardens and PCs. The stages of the infection (and the idea of each "success" making a future failure more likely) are still good in my book, though.

List looks long, so I want to clarify that the writing is really, really strong and I like this entry a lot! It more than makes up for any nitpicks. Some good fucking seafood here!!

Got to love a crab adventure! Seriously, though, there is some good stuff in here! Here is my feedback
+ CRAB PEOPLE - Carcinisation is a really fun mechanic to include!
+ well-written and evocative descriptions
+ NPCs are characterful and detailed.
+ Objectives and win-conditions are well-defined.
+ Layout is simple, but very readable.
- Location keys could use some polish, there is a bit too much fluff to parse key info at a glance,
- The infection mechanic is fun, but I feel like it could be a danger clock rather than a tracked number; it is a bit more manageable for the warden that way.
- Monster descriptions are a bit too verbose; key information could be a little clearer here.

I wish "Polish" was separated into content and presentation because obviously one is a lot better than the other here. The writing is extremely solid, while the design is plain but mostly functional. The map is kinda charming in its sketchy simplicity.

I was initially disinclined to like this one because the title and setup feel like a direct copy of Another Bug Hunt. However, the setting and specifics are different enough that maybe you haven't played ABH and just landed on the same concept independently. Still, I would suggest changing the title and picking something other than a crab for the monster, as otherwise it might be hard to run this for a group that has played ABH without them feeling like you're recycling material. (Unless, I guess, the Warden decided to roll with it, and make "one way or another, everything turns into crabs" the theme of the campaign.)

Full marks for usability. Writing and environmental design are paramount there and you've done an excellent job on those fronts. If my players weren't already in the midst of ABH, I could just grab this and make it their next stop without much tweaking. One small complaint is that I'd like to see the stat boxes visually distinguished from the rest of the text in some way... if you don't want to do much design work, just a 10% tint gray box for each character would suffice.

The theme obviously fits the jam, but I took off one star for a combination of things. Firstly, the fact that the premise collides so directly with the one Mothership module almost everyone will have played, and secondly, that the setting really feels to me like it wants to be a Call of Cthulhu adventure, not Mothership. You've tossed in an Exo Loader and such, but looking at the map and the descriptions, I keep visualizing smoky 1920s industry, not dystopian sci-fi. I think it could work but you might have to lean into it and emphasize the incongruity of e.g. the high-tech lab amid a fishing setup that feels plucked from another century.

Finally, the tiniest nitpick that I include only because I just recently learned the etymology myself and found it interesting. It's "hoisted with (or by) his own petard," not "on," because a petard isn't a hook or rope, it's a kind of bomb—specifically, an early breaching charge. So you're being thrown into the air by your own bomb, not hauled up as "hoisted" would imply in contemporary usage.