Game mockup idea help

Eyyy beautiful people of LV! Hope you're having a good day!
Anyway, at the moment I'm in some need for idea help. You guys seem to be full of ideas and creativity so I thought I could seek some help here! Otherwise I'm stuck
Yesterday got an offer to work for a 2D indie game developer team I'm gonna cry I'm not worthy of this omfg, and to fully qualify I need to present a game mockup piece. No big deal. But my idea count is on -100, that's a big deal.
Ideas of any genre and character range are welcome, as long as it's possible to be crafted with 2D pixel art and 8 color sepia palette limit as in no rainbows or something crazy like that.
So far I'm just interested in practicing on the game mockup, I'm still struggling with deciding either or not I'll respond to the offer and/ or will present the qualification piece. Probably not because I'm just a hobbyist and I'd feel super out of place in a team of professionals.

So if anyone has any ideas to share, that'd be highly appreciated!

IDK wasn't sure where to post so I hope misc. was a good idea

 

Thanks, it was quite a shocking surprise to get it!

Hmm, I was considering a sidescroller, but couldn't think of a neat theme. Kind of wanted to make a mockup of a tactic RPG as well, but couldn't think of anything there either.
Might go with a classic RPG overworld though. Maybe.
The thing is, I'm interested in almost any game x'D There's something from every genre that catches my eye, so i'ts quite a tough choice.
OFF themed overworld would be harder to pull off due to how simplistic is the style. And I'm no fan for simplicity in my work, gotta work till I cry and don't wanna work anymore, haha.

It still gave me some things to consider, so thanks a bunch for the suggestions c':
And thank you very much!

 

That helps for an interesting game concept, although at the moment I'm looking for just one mockup screenshot idea c':
The idea is definitely nice though, thanks for suggestion!