For those of us with terrible eyesight, Shah forced me to scribe the clues here, for your convenience!
Across:
2: The mission - '_____ runs in the abbey' will give you a Monastery (5)
6: We throw our money in to it, close our eyes, and hope for a nice surprise! (7,4)
7: Which old smart scientist will give you a quest on the side? (9)
8: The first building you are asked to build? (3)
9: Your city will get larger with one of these? (9)
11: Old British Gold and Royalty is their name, being our leader is their game! (9)
Down:
1: This building is our base, yet cannot be erased? (4,4)
3: Here our adventure begins, the start of it all (5,3)
4: This building is also known as The Da Vinci Tower (7,5)
5: You can have up to this many to defend your city (5)
10: The funny man who likes to cause mischief within the game (6)