Ad Providers

How much would Google AdSense pay for 10k monthly visit on a legit gaming site?
Are there Ad Providers that pay much more? Even if they're a bit spammier?

depends on the traffic it receives. if is from tier-1 countries like usa, canada, uk, it can upto $40 rpm
some european countries also yeild upto 40.
asian and south asian or middle east traffic can give around $5 to $10 the most.