choice impacting both the scenery and the enemy types the player encounters for the remainder of the level. Each level is scored based on enemy kill ratio, damage taken, route taken, the number of continues used, and time taken to defeat the boss. Over the course of the game, the dragon evolves into stronger forms based on the player's level-end scores. There are six forms available, with a final form unlocking for the final boss. Completing the game unlocks "Pandora's Box", an extras menu that allows players to view completion statistics, alter dragon attributes, change the game difficulty, access new weapons, alter or replay individual levels, and replay CGI cutscenes. Plot Zwei is a prequel set prior to the events of the original Panzer Dragoon, against the backdrop of a war between the Empire and the nation of Meccania over remnants of the Ancient Age, a vanished civilization. Jean-Jacques Lundi lives in a small village whose people ride pack animals called ""; mutant born exhibiting bioluminescence are killed as unlucky omens. Lundi defies the village tradition by sheltering an abnormal born with both a glowing green throat and wings, naming him Lagi. Later, when the animal is fully grown, Lundi rides Lagi outside the village to try to get him to fly. While the two are out riding, an automated Ancient Age airship called Shelcoof destroys Lundi's village. Lagi fires at Shelcoof with lasers from his mouth, the trademark attack of dragons from the Ancient Age. During the first level of the game, Lundi and Lagi pursue Shelcoof through the ruined village in parallel with the forces of the Empire, who seek to control Shelcoof. Lundi and Lagi almost reach Shelcoof, but a mysterious dragon attacks and drives them back. The second level has Lagi and Lundi riding through a canyon network to attack either a Meccania fortress or a fleet of Imperial airships, depending on the route chosen; the boss is an enormous Imperial flying battleship. In the third level, the two fly through a forest while fending off wild creatures and Imperial gunships; the boss is a gigantic forest beast. The fourth level is set in the half-flooded tunnels of an underground ruin from the Ancient Age, where Lagi and Lundi fight through the facility's defenses to face the boss, a massive aquatic living weapon. In the fifth level, the two finally reach Shelcoof as its monstrous guardians