A game need some money to maintain itself, and more than that, it must be profitable bcause it's a hard work... i.e How could you maintain a server running without charge some cash? that's why almost every "game" in our bitcoin universe is a scam or it tends to be one... I also think that this is why only casino/dice games run with success, because the house earn a lot with the programming logic (maths behind it)... and other type of games, like (don't know, candycrush, angry birds, warcraft, worms, counter strike, street fight, etc) don't have this "kinda" math involved... you only play, and pay some cash for license, etc... I think that, any game beyond this "kinda" (first example) s very hard to maintain because the gameplay must be awesome and people have to forget about profits, etc... fk, that's why it''s so f***** hard to have a "earn btc" game, it will fall in the suckiest quality gameplay ever... it's a long story telling.. but it's a cool "conversation".
Like you say "How could you maintain a server running without charge some cash?". My original thoughts here, was to rely on revenue alone for income to pay out to the Users/Game players.
But as was mentioned previously there may be room for some kind "Dice Game/Gamble" (provably fair of course) to reduce the outgoings.
Somewhere down the line I would like to increase the gameplay as well so users stay longer on the site (This in turn increase ad revenue)
But any thoughts about improving income would be grateful?