First Game Idea

http://www.austinhabitat.org/

i would like to have this as my game topic because i have a really good idea to make this a game, and plus i think its a really good non-profit organisation. Like was thinking to make the game like a drag or drop  game like i will draw the tools and like you have to chose the one we need to build the house then later on,on the game build the outline of the house and all of the stuff that you did you build the house and yeah thats what i was thinking  how to do my game if if you gave me this topic.