Search:

Granted, but its hidden under a pile of dust.
I wish I had a bulldozer. A big badass bulldozer.

Think SMS (or Facebook Messanger, for that matter)
I want to be able to put an SMS-alarm on my buildings. The SMS should tell me that the mine is depleated or whatever. Every alarm has an ID so...

That would be Utopia
What if there was no monetary system?