We, unfortunately, cannot use EAC right now, as it requires ongoing costs for users actively communicating with the EAC service. This isn't feasible with our release model for SCP: Pandemic. In addition, we have heard many compatibility issues Linux users face when trying to emulate on their systems with EAC, and we are not able to provide a dedicated Linux build as it currently stands. Nevertheless, this is just a 4-player co-op game for you and your friends. Countering cheating feels very unnecessary for this game specifically. Thanks, everyone. Stay safe. Affray