V.0.2.1 is obsolete and is not being worked on. First playable PC version of Rebuild is coming in next 24 hours. After this release, future update will be uploaded few days later after next android rebuild.
For now content wise, you should play v.0.2.1 until more contents are added to the rebuild version.
Even though it has less contents, there are few things that are only available in the rebuild version such as new bat enemy, two skeleton animations and Annie's animations with spider and worm.
