GOG is a platform for distributing games, except they are focused on DRM-Free Content (DRM-Free means when you install the game, you are not required to login in order to play it)
- Log into your GOG account, or create one first.
- Visit the front page of GOG : https://www.gog.com/
- Scroll down to see a banner for Tonight We Riot (it may take a few seconds to load)
- Click on the GET button
- That will add the Tonight We Riot to your account
