Building mini game

There could be an option to manually build something in doing a mini game.
I have a few ideas as to what could be done. Such as:
some form of just tapping,
or a quest you could start then complete for -1 hour for example or even some form of mini village with upgradable items for single player battle style play that gives less time,
or even some form of new currency to collect in a battle.

thanks for reading
Bomby Webb