1. Not sure how many hours but my game took around 6 days including creating the artwork. It took longer before I put it up though as I wanted to test it out with some people first. Highly recommend doing that if you have the time!
2. I learned to simplify and cull mechanics which are interesting but not necessary. Keeping the game on theme was my top priority.
3. I found layout the hardest. Fitting all the information I needed on one page was not a problem but weird gaps, choice of colours and font etc. took me a very long time.
4. Everyone should check out Cave Man in a Strange Land- it's simple, thematic and fun!