Recently a hole was discovered in the Steam APIs, that let people deduce how many total players a game has.
https://arstechnica.com/gaming/2018/07/steam-data-leak-reveals-precise-p...
Interestingly, Spiral Knights comes in at 5,226,655. And presumably this figure doesn't count SK players who don't use Steam.
Thanks, that actually makes me happy to see that spiral could be that high. But is that including the amount of people that play on a monthly basis, or just the amount of registered accounts?