Download the PC version of the game.
2. Unpack the .zip using RAR or your desired unpacking tool.
3. Download Joiplay and the Ren'py plugins, up to date versions of both can be found on the joiplay website.
4. Launch Joiplay, when you're on the main menu click the "+" button on the bottom right. Enter game name, version and (optional) game icon.
5. On the "Executable File" click Choose and go to the location where you downloaded the game, when inside the unpacked game folder choose the .exe game file and click Choose. When all information looks correct, feel free to click on the "Add" button.
6. You're now done and good to go. Have fun! (You may also want to move saves around)