Gun Sprint is a perfect example of a game that managed to crush success by ruining a fun game with advertisements. I would have happily paid for an ad free version of the game, but they don't offer that. It was so fun I was willing to put up with an ad every round for a little while, but you spend 10x the time on commercials than game time. Such a waste. Well, you've ruined it for me and now I'm uninstalling.