We put a text for this in the description of the game, it actually works like this, every 10 seconds the user encounters an event and as long as this text is up, the event continues. In other words, one of the events that comes every 10 seconds may last 2 seconds and one may last 5 seconds, but a new event continues to come every 10 seconds, regardless of how long the previous event lasted. Thanks a lot for your feedback, don't forget to rate us if you like it!