There are some other areas that are playable but I decided to block off the paths that lead to them because they weren't finished yet. The frog item (grants you the ability to jump) was in 0.0.3 but during 0.1.1's development I decided to put it somewhere not so close to the other items so I deleted it from the old location, and put it in one of those blocked areas, so you can't get it in 0.1.1. Version 0.2.0 is in development and will come out in a few weeks.