If a game isn't your goal, but just an interactive 3D model of a house, there are several software programs that do this for you so you can arrange furniture, plan for extensions, etc. Just do a search at download.cnet.com for 3D floor plan or 3D home design, and you'll get lots of hits.
If you want something more engaging with little to no programming, try the First Person Shooter Creator from The Game Creators . They also have other tools if you'd like to do a little more programming on your own.
Good luck!
roswell1329
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