here is my list
its quite short
1 vice city
2 devil may cry 3
3 devil may cry 4
4 devil may cry 5
5 assassin's creed 4 black flag
6 world of warcraft wrath of the lich king
7 world of warcraft cataclysm
7 world of warcraft mists of pandaria
8 fifa 14
9 fifa 15
10 COD
11 COD 4
12 warface player name kuldeep on north america server
Age of Empires
Age of Empires II / Age of Kings.
All the Red Alerts and Commander and Conquers
CS 1.6 and Go
Purge
<---------- That picture: Dark Age of Camelot, all the xpacs<------ For like 8 years. Still play free shards daocportal.net
Lineage
Lineage 2
Warhammer Online
Rift
EverQuest
Oblivion / Elder Scrolls 1-6
Gta San Andreas Multiplayer mod (still play sometimes).
GTA 5
WoW all the way up to Panda, but now I only play WOTLK 3.3.5 really.
Rust <---- I spent way too much time on Rust recently.
agar.io
empireattack.com <------- Still play
DayZ
Need For Speed World <-------- WAS amazing. It will rub off onto your real life driving behavior, caution.
Forza 3 and 4.
MW2
Battlefield 2.
Way to many to count, I have over a 100 on my Steam alone. I've owned every Nintendo Console and Handheld with at least 20-50 games on each. All PlayStation consoles, Xbox and Xbox 360, each with about 20 games. I also owned a Dreamcast and Sega, as well as played many games on the PC.
Were I to list the top ones I played (as in most hours spent), they would be:
Pokemon series
Legend of Zelda series
Final Fantasy Series
Runescape
Elder Scrolls series
Grand Theft Auto series
Super Smash Bros series
Civilization series
Sims series
Saints Row series
Mass Effect Series
Dragon Age series
Kirby series
In total I've easily played over 400 individual games and I'm not just talking about for a few minutes either. Some games like Pokemon and Elder Scrolls I put in over 300 hours in each installment.