The game was 20 USD, Steam took 25%, publisher took at most 40%, the Swedish government took another 50%, let's go ahead and dock another 20% for business fees in Sweden, and there were 5 developers originally as far as I remember

8 000 000 * 20 * 0.75 * 0.60 * 0.50 / 5 = 5 760 000 USD per employee

Given that the devs have taken 2 months of vacation this year and it's not even holidays yet and they purchased a horse and donated it I'm going to guess that they got a decent amount of lunch money, yes