After 1.5 years, Hide and Seek is finally in the 1.0.0 version and it's publicly available. You can download the game from the Itch.io page. Depending on the result of the discussion with the rest of the team maybe we will publish also the source code of the game and the server. 

For now, you can download the game for all three major platforms: Windows, Linux and macOS all in 64-bit architecture. There is also a JAR file that you can use to configure and run your own server to play with friends :)