Forest Siege 0.0.6 is a revamp for the game's vision. The game's concept was to be a survival theme with mechanics and visuals that give the player a mysterious and somewhat scary feeling. The game has lacked this for many reasons, this update addresses the visuals to tune into the original concept.
The file downloaded is an installer, simply run the installer and select the path you would like to install to (Desktop recommended). Once it is done, you can play the game by opening Forest Siege (Version number).exe
Alternatively, download the ZIP format and extract the game manually.
Each time you install the game, you are encouraged to delete the older version of the game. This won't affect your save files.