If you've got questions, someone will have answers... or advice... or will at least admit that no one knows!
There's no limit on silliness, seriousness, scope, scale, size, tone, type, or tempo. Your goals are your own, this is just a space to share and be awesome along other awesome people trying to achieve little goals of their own. Many of my favorite games are squarely within the genre of "silly little." I, personally, would welcome such a contribution here!
Of course, if this gives you more anxiety than enjoyability, please don't feel any pressure to participate.
I just published a complete redesign of a previous module I created (an adventure for the Mausritter TTRPG). It looks entirely different and has some additional features that the original didn't have, but the core product isn't new. Would that be acceptable for this jam? Since I'm in New Zealand, it's been 1 January for a whole day already.
So, the idea for this Jam to encourage people to create something new during the month of January. It's ok for people to get started early, but it sounds like you did almost all the work before the jam started and would have been doing that regardless of this jam's existence.
If that's the case, it's not entirely in the spirit of the jam, but I'm not here to police what does it does not belong in the jam.
It looks like it's available to the other jam participants for free (point 3 on the jam list), so that just leaves point 2: "Support and encourage your fellow JAMuary participants (advice and feedback should be constructive and considerate)."
So, I'll leave this up to you. Are you looking for advice and feedback on your project? Are you down to support and encourage the other jam participants?
If the answer to those questions is "yes," then I don't see anything wrong with your project being included in this Jam!
Ah thanks so much! And thank you for the glowing review on the game! It really means a lot that you enjoy it so much.
Could I ask you a favour? If you have a minute, do you think you could post that review as a comment on the game itself? Itch doesn't show review text anywhere useful, so having it visible there would be really helpful. No worries if not though - just thought I'd ask.
I hope this doesn't sound too suspicious, is it generally frowned upon if my work is similiar to another game? This is literally the second time I'm making anything public and I'm a bit anxious. I am trying to make a FitD mecha game based primarily on Armored Core, but I'm worried it might end up being too similiar with Apocalypse Frame, which is a Lumen Game
Not a bit. I think you may be hard-pressed to find a game being worked on here that isn't similar to other games. What matters is that you make something that fulfills your personal creativity and design goals. Ours is an iterative art form, so you're on solid ground as long as you're iterating artistically!