Thank you! The pressure is definitely lacking so far; the enforced running is a good idea! I will definitely do something about that, but not for a few weeks.
Yeah, they're just mud puddles. It was a first attempt at an obstacle rather than open space and food.
Thank you! Those tiles were the first real game art I've drawn entirely myself, and as a programmer that's high praise :) thank goodness for the 64x64 limitation to make it easier!