List of the combinations
Action:

Airplane, Aliens, Alt. History, Cyberpunk, Dungeon, Fantasy, Horror, Hunting, Martial Arts,
Medieval, Military, Music, Ninja, Post Apocalyptic, Prison, Rhythm, Sci-Fi, Space, Sports, Spy
Superheroes, Time Travel, Werewolf, Zombies

Adventure:

Comedy, Detective, Fantasy, Law, Life, Medieval, Mystery, Pirate, Prison, Romance, Sci-Fi, School,
Spy, Time Travel, Zombies

RPG:

Aliens, Alt. History, Cyberpunk, Detective, Dungeon, Fantasy, Fashion, Martial Arts, Medieval,
Mystery, Post Apocalyptic, Sci-Fi, School, Spy, Vampire, Werewolf, Wild West

Simulation:

Airplane, Business, City, Dance, Dungeon, Evolution, Fashion, Game Dev, Government, Hacking,
History, Hospital, Hunting, Life, Martial Arts, Military, Movies, Music, Prison, Racing,
Rhythm, Sci-Fi, School, Space, Sports, Startups, Surgery, Transport, Virtual Pet, Vocabulary

Strategy:

Airplane, Aliens, Business, City, Dungeon, Evolution, Fantasy, Government, Hacking, History,
Medieval, Military, Sci-Fi, School, Space, Transport, UFO, Vocabulary

Casual:

Airplane, Comedy, Dance, Fashion, Martial Arts, Movies, Music, Racing, Rhythm, Sports, Virtual Pet, Vocabulary