Coming up on the ten-hour mark. I’ve got the mechanic done and sounds in, looking good. You can fiddle with it here, today is going to be spent working on puzzles. Left player uses WASD and right player uses arrows (it’s all just as do-able by one person, though).
There are lots of ‘immediate and unforeseen failure’ situations that I’m going to have to avoid, and lots of really easy layouts that I’ll have to use carefully. But also lots of really interesting spacial puzzles, I hope!