Currently Online 
I never experienced this myself with a single game. I don't game that much, if I put 50 hours into a game it's a lot. I do sometimes have spells where I'll play more than I should (in terms of time consumption) but that never lasts long and it's always manageable.
I did, however, use to play games together with a group of friends and at some point the whole group (except myself) started playing Dota 2 excessively. They always wanted me to join, but the game just seemed like a huge time sink. They all racked up like 10,000+ hours of game time and apparently you're still considered a Dota 2 noob at that point. A friend of mine still plays the game and I think he's at 20,000+ hours now, which is absolutely insane for someone who isn't into the game (I think my most played game of all time is Advance Wars Dual Strike on the DS with 250 hours, which I played on and off for years). He tends to have spells where he just plays Dota 2 excessively for hours and hours and then he has to force himself to stop playing for a few weeks or months. He literally won't leave his house during his Dota addiction spells. It makes me worried at times.
