I liked the little voice clips you used for the dialogue sections. Very nice!
The spaceship controls were interesting and the UI pointers very helpful for navigating!
I wish there was more to the game than just shooting Pebbles, selling their remains and trading it for mayo.
I think I stopped playing after delivering 10 mayo as the gameplay got repetitive quite quickly.
Could be interesting if you manage to expand on the game with more storyline/quests and spend some time to polish it.