Some good early progress..
Early snapshot from our game.

We've decided on an arcade game / roguelike where you kill things before the platforms run out, with the goal being to upgrade your character enough to face the boss at the end. Decided on this over more complex ideas so that we can make the deadline without burning out.
Glad we did because we've had a few time consuming misshaps but soldiering on.
Feeling the crunch now though!