I like the unique setting of this game! The controls are easy to learn and intuitive.
Things you could improve:
- The music sets a good athmosphere, but it gets annoying over time. -> Would be good to add different tracks and a volume slider.
- The movement of the robot feels a bit slow. I would not mind if it moves ~50% faster
- Add the ability to sell multiple items quickly
- Give the items in the shop names
Overall a good start, I see potential here!