D20 Modern

Bughunters Dark Horizons Universe Dark•Matter Gamma Terra GeneTech Pulp Heroes Shadow Chasers Star*Drive Star Frontiers (Star Law) Urban Arcana

Action / Adventure (Superheroes) Modern (Urban) Animation / Comics History (Alternative) Science Fiction Science Fiction (Cyberpunk) Modern History History (American West) History (Victorian Era) Science Fiction (Time / Dimension Travel) Fantasy (High Fantasy) Steampunk Animal (Anthropomorphic) Science Fiction (Post Apocalypse) Fantasy (Science Fantasy) Action / Adventure (Pulp) Action / Adventure Fantasy (Modern Urban Fantasy) Modern (Near Future)

Attribute/Stat Based (STR, CON, PER, etc) Class Based (Pilot, Wizard, Scientist, etc) Dice (Primarily d20) Level Based (Earn XP and level up) Progression Tree (Skills, professions, magic abilities, etc.) Skill Based (buy or gain skills)