Setting up Steam integration for Unity. The video goes into the basics of creating achievements and leaderboards using the Unity Steamworks package. Also covers building/uploading to Steam via the Steamworks SDK. No paid addons used.
This is my attempt at a maze generator in unity, it should be viable for any tile-based game. It takes tiles (corridors or rooms) of a fixed size and builds a customisable path from start room to end room, and then adds similar paths at random points along the chain.