Also..
You can add MEMORY - so robot can save some parametrs catch from exeption. Ofc MEMORY can be install in more advanced robots and needs new resource like silicon.
New robots could be consume some energy like charcoal.. or can by install sollar cell... etc ..
There are so many ideas in my head... (It depends on which audience group the game is directed to).
Don't give up - keep working - Success is waiting for you.