G.E.A.R Cog's Handbook: A Collection of Subclasses for 5e

If you like the genres Action / Adventure (Superheroes), Fantasy (High Fantasy) , this game is for you.

If you like the mechanics Dice (Primarily d20), Dice (Various), Class Based (Pilot, Wizard, Scientist, etc), Level Based (Earn XP and level up), Attribute/Stat Based (STR, CON, PER, etc), Race Based (Player Race/Species affects gameplay) , you will enjoy this game.

This game falls under the category: Sourcebook (rules/options to enhance play).