I used to run a popular mod that made an indie beta game even more popular. Guess who almost all of the final testers were before release? My whole team. We were clearly the most devoted people to the game and knew best how to break it. It was nice to get a head-start on our new mod (which we pivoted to be the equivalent of Steam Workshop or an app store before those existed). Of course, the creator became a dickwad years later and we all ended the mod and the game is dead.