This is wonderful and I want more, it's so addictive.
A question: Is this allowed? (tecnically it is):
everything is possible... if you jam every piece really hard into the grid >:D
You could even do a one piece spaceship by placing everything into one slot. You can do all of that because we didn't think it through in the earlier stages and once we realised what was happening, it was too late into the deadline to fix it :(
(gracias Javi :'D)