Sineus Arena Survivors is a co-op bullet heaven base defense game where the entire map gradually turns into a siege against endless hordes of Cloud. The Beacon stands in the center—the only place that still holds back the darkness. As long as it burns, the team has a chance to hold out. Players are constantly rushing around, shells are flying, towers are being built, fortifications are collapsing, and any mistake quickly results in an enemy breakthrough right to the base.