Here you can brag to people about the highest hours you spent in a video game on Steam. List your top 5.
My top 5:
Team Fortress 2: 1856 hours
Garry’s Mod: 678 hours
Skyrim: 528 hours (currently clocked in at 70 hours in the past two weeks!)
Portal 2: 395 hours
Sonic Adventure DX: 91 hours (don’t ask)
I would be surprised if Garry’s Mod isn’t in someone’s top 5 here, assuming they’ve played GMT.
Here are my top 5 highest total hours in the following games as of 8/13/15 (MM/DD/YY)
Garry’s Mod: 832 hours
Team Fortress 2: 609 hours
Grand Theft Auto V: 234 hours
Left 4 Dead 2: 162 hours (I love this game)
The Elder Scrolls V Skyrim: 89 hours
All total hours are going to change sometime in the future obviously. 
Heavy bragging rights list? Count me in.
I seem so casual compared to you guys:
Team Fortress 2: 480.2 Hours
Terraria: 181.9 Hours
Borderlands 2: 55.4 Hours
Civilization V: 54.8 Hours
Binding of Isaac Rebirth: 44.9 Hours
If we were going to count software as well, I would have to add these two in:
RPG Maker VX Ace: 281.8 Hours
RPG Maker XP: 136.8 Hours
Here is my top 5 most played games on Steam -
Wow. That’s a huge leap there.
My top 5!
1: Team Fortress 2 (319 hours)
2: Garry’s Mod (267 hours)
3: Planetside 2 (124 hours)
4: Counter-Strike: Source (106 hours)
5: TrackMania 2: Canyon (105 hours)
Let me just point out, though, that if I took my playtime in all TM2 games plus TMU and put it together (excluding my time in TMN and when I just used ManiaPlanetLauncher.exe), that totals to 295 hours of TrackMania. Yes, I am addicted to those games.
1: Garry’s Mod - 1,825 hrs
2: Team Fortress 2 - 314 hrs
3: Transformice - 64 hrs
4: Left 4 Dead - 51 hrs
5: Left 4 Dead 2 - 37 hrs
If you add in the old TrackMania games, that would probably end up number 1 at my list but the old games don’t count time played 
Okay then, let’s do this
Team Fortress 2 - 900 hours
Euro Truck Simulator 2 - 158 hours
Portal 2 - 135 hours
Garry’s Mod - 83 hours
Civilisation V - 49 hours
Total playtime - 1325 hours
Total playtime across all games in my library - 1812 hours
(1.) Source SDK (2,066 hrs)
I’d rather have my Trackmania titles on this list instead of these other games I didn’t play in ages :V. I can’t manage to take the places up though, as I play much less video games than I did back in the days. And the reason as to why I only have two major-played games is that I was very fixed on one game for a long time back then. But the reason changed to the fact that I can’t find many games that get me extremely addicted to it or provoke extreme replayability, like GMod and TF2 did. Even said Trackmania can’t really top GMod yet in terms of that.
Top 5:
Garry’s mod : 3,158 hours
tf2: 1,219 hours
Csgo: 211 hours
payday 2: 173 hours
l4d2: 171 hours
1: Team Fortress 2 at 1675 Hours
2: Garry’s Mod at 914 Hours
3: Counter-Strike: Source at 565 Hours
4: Payday 2 at 506 Hours
5: Grand Theft Auto V at 226 Hours
also inb4 super funny joke
1: Tower Unite at 1337 hours
2: Sakura Clicker at 420 hours
3: Sakura Spirit at 69 Hours
4: Sakura Angels at 42 Hours
5 Half Life 3 at 3 Hours, 3 Minutes, and 3 Seconds
Garry’s Mod - 1,002 hours
Left 4 Dead 2 - 771 hours
Counter-Strike: Source - 568 hours
Counter-Strike: Global Offensive - 478 hours
Team Fortress 2 - 344 hours
Garry’s Mod - 2,881 hrs
Counter-Strike: Global Offensive - 899 hrs
Team Fortress 2 - 725 hrs
Counter-Strike: Source - 633 hrs
APB Reloaded - 368 hrs (why did I even play this game…)
I know someone who has 10k hours on GMod, lol
anyway, here’s the list:
Team Fortress 2: 1,823 hours
Garry’s Mod: 1,413 hours
Counter-Strike: Global Offensive: 511 hours
Warframe: 414 hours
Assassin’s Creed II: 94 hours
FYI I’m almost 100% done with AC2, I just need the rest of the feathers from Venice and I’m done
I know someone who has 32,327 hours on GMod
cough Capsadmin cough
Team Fortress 2
2419
Garry’s Mod
528
CS:GO
282
Terraria
281
Clicker Heros
115
Binding of Isaac and Rebirth should be on there, but I mainly played them in offline mode, so steam didn’t count the hours on them.