Clearly a lot of work has gone in to this and I found it to be fun while I was collecting resources and building defenses early on. But there are some issues:

I found that I ended up with a huge amount of resources quite quickly, far too many to be able to use after I had built up all defenses and researched everything. I then clicked the text adventure part but I couldn't get past the first bit; I can type help but none of the other commands do anything when I enter them...