The drawing and erasing is very difficult to use, and I have no idea what select was for as it appeared to do nothing.
It's rather difficult to get the first two tardigrades together, but once I did the entire ppopulation stubbornly stuck in a narrow tunnel despite it being open to clear space and higher elevations at both ends, causing my game to end at 13 tardigrades (even though the meter didn't run out???).
It's an interesting concept, but it needs more polish.