Rhyolite is a co-op action roguelite set on a steam locomotive in a steampunk world. A team of four players must defend and repair their train during attacks by ghost trains, where every mistake can be fatal. Cooperation, reflexes, and improvisation under pressure are crucial. Train under siege Everything is boiling: steam, smoke, and adrenaline. One controls the engine, another repairs the pipes, a third holds the line, and a fourth monitors the instruments. Teamwork is everything — without it, your team will fall apart. Every role is important, because even the slightest delay can lead to disaster in the middle of a lifeless, iron wasteland. Ghostly enemies leave no time for respite: they swap players, block doors, and destroy equipment. To survive, you need to act quickly and coordinatedly. Between battles, you can upgrade the train by installing new cars and modifications to turn it into a true survival machine. Features of the game Online co-op for up to 4 players or single-player with AI assistant. Five character classes with unique skills and roles. Dynamic battles with ghost trains and anomalies. System of upgrades and improvements between flights.