Your review:
This Build Your Bot mechanic is so cool!
100% the highlight of the game is the Factory Mode. Most of my time playing was spent trying out different combinations to find what I liked the most (I ended up with a near infinite ammo shotgun XD).
This is an amazing idea and, as someone that has tried making this node snapping type of mechanic before, I have to say I'm absolutely impressed that not only were you able to make this mechanic into a working and stable state during the jam, but also added so much variation and modularity to it.
As for the rest of the game, I'll be blunt and say that it's very crude. Keep in mind that I understand the absolute biggest chunk of time must have gone into getting all the pieces of the Factory Mode to work, but I still want to give proper feedback on the current state of the game as a whole.
In many instances when performing an action, as well as when loading into the map, the music freezes and spikes very loudly. I'd look into ways to alleviate the loading process as well as keep the music separate from the current scene.
While I really like even the current simple visuals of the items from the Factory Mode, the visuals for environment and enemies are very lacking, and as much as the idea for the moving legs is nice, it doesn't seem to be working properly right now.
I appreciate you used some audio assets to have something in place, but they seem pretty out of place with the rest of the game.
When it comes to the GDD, I have mainly praises.
Absolutely amazing that you went into such depth on the mechanics and gameplay aspects. This is exactly the level of detail you would want to see, since having all this information clearly documented makes development much less cluttered and way more focused. Since you have a "source of truth" to reference for your goals, inspirations, what are you trying to achieve, mechanics and interactions.
Especially when in a team, it makes communication easier, reduces doubt, and makes for less reiterations needed.
The only part of the GDD I'd recommend spending some more time on, is the inspiration and concept. Understanding what are your key goals and what is important for you with the game is very important to be able to end with a game you actually enjoy.
I want to reiterate, I absolutely loved the Factory Mode mechanic, so I can only indicate that I would love to see this game get more time in the oven. This base mechanic clearly has the potential to be expanded upon, with more types of parts and parts in general, on top of bigger grids as an upgrade. You could even have parts with unique interactions with the grid, that block or skip certain tiles for example.
It would be great to see this game get to a polished state so that the package as a whole lives up to the Factory Mode mechanic.