That took an embarrassing long time to come up with an idea to match the thema that wasn't spelunking or a platformer. Still not totally sold on the idea but I need to start actually working on something (literally still haven't started beyond brainstorming).

I'm going to do a mix between tower-defense and guantlet, where you lead a team into a cave system. meh

Day #1: just get the mechanics in and working. Gameplay-loop should be solid before starting day 2

Day #2: art and music

the mock up