I use the categories more as a tag system for features so I can get a quick review of features when I am in detail view. When I am looking at a game on detail view I can quickly see the genre, year I bought the game, if it supports a gamepad, if it needs a frame limiter, and if it has ever been played, and how long it will take me to download it. Also helps me keep track where games are installed.
Flight, Arena, Beat Em Up, Card and Board Games, Comedy, FPS, Hack n' Slash, Horror, ISO Shooter, JRPG, WRPG, Open World, Platformer 3D, Point Click, Puzzle, Real Time Dungeons, Real Time Strategy, Rhythym, SHMUP, FOV Makes Me Sick, Side Scroller, Simulation, 2D Platformer, Kinda Like Zelda, Kinda Like Metroid, Sonic, Speed, Stealth, Survival, Top Down, Tower Defense, TPS, Turn Based, Twin Stick Shooter, Visual Novel, Walking Sim, Hidden Object
My Categories look ike this:
Review A
Review B
Review C
Review D
Non-Steam : Origin and Uplay
Non-Steam : GOG
Never Played, Not Installed
Played, Near Begining
Category - Co Op
Category - Deathmatch
Feature - GeDoSaTo
Feature - GFWL
Feature - Workshop / Mods
Genre - Action RPG
Genre - Space Combat
Genre - 4X
Genre - Automotive
Installed Drive C
Installed Drive External
Not Installed - Review A
Not Installed - Review B
Not Installed - Review C
Not Installed - Review D
Not Instaleld - Review F
Installed - Over 10 GB
Installed - Under 500 MB
Not Installed - Over 10 GB
Not Installed - Under 500 MB
Frame Limit needed
Keyboard and Mouse
360 Gamepad Support