Board Thread:Questions and Answers/@comment-205.144.100.200-20141231161907

My 1st (freebie) house generates $5 every 60 seconds. My 2nd house generates $10 every 5 minutes. My 3rd house generates $15 every 30 minutes.

What's the logic here? How do I boost my 1st house to build up more $$ for longer? 