I've been looking into steam tags to come up with dimensions to quickly find games that I want to play.
Example: Single Player, First-Person, Shooter, Cyberpunk = Deus Ex: GOTY
5 Dimensions
=Gamemode=
I feel like this is the first choice when you decide what to play. (if you don't know what to play)
Examples: Single Player, Local Multiplayer, Multiplayer, Co-op, Local Co-op, Splitscreen
<Viewpoint>
Camera perspective is important to be it's own dimension
Examples: First Person, Third Person, Isometric, 2Dimensions
(Gameplay)
This describes what gameplay mechanics should be in the game.
Examples: Shooter, Racing, Stealth, Simulation, Survival, Turn Based etc.
-Universe-
This describes the gameworld based on an (alternative) timeline
Examples: Prehistoric/Mythology/Medieval/History/WOII/Cyberpunk/Sci-Fi/Space/Horror/Fantasy/Surreal/Supernatural
Aestetics
This one describes artstyle, but many games with 'realistic artstyle' are not tagged.
Examples: Pixels. Anime, Cartoon, Abstract
