The game can be played in two manners: with and without an Android phone.
When using the android phone, install the provided .apk on it.
To connect it to the PC, make sure it is connected to the same network as that PC.
On the PC itself, make sure port 12004 is open (or disable your firewall for a second), and find your IPv4 adress.
For Windows, open cmd.exe, and type "ipconfig", it will be listed there.
Quick note: You have to have launched the game before you can connect (and have started the game; pressed the "start game" button on PC).
If you're not willing to go through all that hassle, you can alternatively play the game with WASD, spacebar and the mouse.
For the most part, the game is self-explanatory. However, at some point, after you've climbed the first vine, you'll be able to draw your own branch.
On android you can use the centre panel to draw it, on PC you can click the shrubbery.
If I still have your attention at this point, I probably made using the game sound a lot more difficult than it actually is.. Anyways, have fun! :D
Oh yehh, we forgot to add a quit button, so you'll have to alt+f4 it.
Music by Derek and Brandon Fiechter - https://dbfiechter.bandcamp.com/