Love the graphics and the music for the game, controls feels solid and doesn't have much problem with it. And to top that you've manage to implement an option for the gamejam time frame!
Only concern here was the ghost were running really fast when the reaper was near and the only way to catch them is when bump into objects, maybe tuning down the ghost speed so the reaper can still catch them even without the obstables.
All in all great entry, Cheers!!