Antonio BrownArian Foster off the top of my head , not many more , though . I normally just use late round picks as deal sweeteners . <| sep |> This is somewhat interesting from a marketing psychology point of view I suppose , which is a topic that I ' m sure a lot of indie game devs could benefit from . But I don ' t see much in here that has to do with the design of the game . It might be more accurate to replace the word ' gamers ' in the title with ' customers ' or even ' commodities '. This sort of loss aversion is what I would consider a dark pattern that , at worst , can play on a person ' s anxiety , depression or addictive nature . If you need an ' awesome psychological trick ' like this to keep players engaged then either the game mechanics aren ' t sufficient , or the purpose of the game is not to entertain the player , but to continually generate as much money from them as possible . tldr A valid marketing tactic , maybe , but an exploitative one .