ESports game developer Valve Corp. has expanded its crackdown on skin betting by targeting all types of products, including the .

Valve’s decision to crack a whip on Counter-Strike and Dota 2 third-party gambling sites comes after two separate lawsuits were lodged against it in Connecticut and Florida for its relationship to what the lawsuits call illegal gambling.

In a notice, Valve orders 23 individual skin betting sites to stop the use of their Steam accounts for any commercial purpose. Among the sites which has received the notice was CSGOLounge.com, which is said to be the clear market leader among skin-based sports betting sites.

“We are aware that you are operating one of the gambling sites listed below. You are using Steam accounts to conduct this business. Your use of Steam is subject to the terms of the Steam Subscriber Agreement (“SSA”), http://store.steampowered.com/subscriber_agreement/. Under the SSA Steam and Steam services are licensed for personal, non-commercial use only,” according to the notice. “Your commercial use of Steam accounts is unlicensed and in violation of the SSA. You should immediately cease and desist further use of your Steam accounts for any commercial purpose. If you fail to do this within ten (10) days Valve will pursue all available remedies including without limitation terminating your accounts.”