Ooh, now there's a question. Hold on a sec...
Here's the Grand Total so far:
- Warhammer Fantasy: Dwarfs, Greenskins, Lizardmen, High Elves, Skaven and Beastmen = 6
- Warhammer 40,000: Tyranids, Orks, Chaos Space Marines, Dark Eldar, Necrons and a few Tactical Squads of Firstborn Space Marines = 6
- Middle-Earth (with the ultimate intention of using my collection in War of the Ring rather than the Strategy Battle Game): Khazad-Dum Dwarves, some unmade Knights of Rivendell, Moria Goblins, 'Mordor' Orcs that can be used in a number of factions and Uruk-Hai = Technically 5
- SPQR: Ancient Britons, Early Imperial Romans, and some unbuilt models planned for Ancient Greek and Slave Revolt armies = 4
- Dark Ages (Haven't decided which games to dedicate my force to yet): Romano-British/Welsh (One army planned to be used in both Arthurian and 'Viking Age' periods as the same sort of ethnicity) = Technically 1
- Star Wars - X-Wing: Rebel Alliance and Galactic Empire = 2
- Star Trek - Attack Wing: One ship each from Federation and Klingons, 2 Romulan ships and 4 Dominion ships = 4
- Armoured Clash: Crown and Enlightened = 2
Total = 30
....
Thank you. This actually makes me feel better.
AOS: Gloomspite (Troggoths AND Gitmob), Ironjaws, Skaven (4000+ points), Seraphon, Stormcast cavalry, Kharadron, Disciples, Blades = 8 (but I could split Skaven into 3 armies and Gloomspite into 2)
TOW/WFB: Beastmen, Orcs & Goblins, Renegade Crowns (2 different forces) = 4
40K: Orks, Grot Tanks, Hobgrot Scrappaz, Speed Freeks, Squigmob (technically these 5 are all one Ork army), Chaos Daemons, Astra Militarum (2 different armies), Agents of the Imperium = 5 to 9 depending on context
Total: 17. Rookie numbers compared to your, but I did sell off three factions recently.