Action games
If you don't play games that much, there is a big chance you have played an action game, e.g. a shooter, at some point. This category is full of games that won't let you get bored.
Super Smash Flash EXE
Resident evil 5
The Elder Scrolls: Arena
Destiny 2
Transformers - Revenge of the Fallen
jalada AstroChase
Shift Happens
Townopolis
Krrish - The Game
Half-Life
Runica
Command & Conquer: Red Alert™ 3
Air Assault
Prince Of Persia - Warrior Within
Tilelander
Hitman 2: Silent Assassin
Power Hour
Super Smash Flash 2
Yargis
Alien Terminator
Left 4 Dead
GTA Green Lantern
Gang beasts
Crysis WARHEAD
Spore: Galactic Adventures
Jurassic Park Operation Genesis
Battle For Graxia
Left 4 Dead 2
Peggle
Project IGI
Discover FDM
Add-on support
You can get add-ons that download files/video from arbitrary websites.