Jesse plays the Diofield Chronicle, a video game in which players control a mercenary character. The game features a number of different units, each with their own abilities and statistics. Jesse chooses to focus on one unit type and develops his skills accordingly. He also mounts a charge on his horse at one point.
In the "Diofield Chronicle" video game, players control a character who must fight through various levels to reach the end. In the first level, Jesse fights against zombies and is unsuccessful in defeating them. Later in the level, he is attacked by a dragon and is successful in defeating it. However, he is then attacked by a group of undead and is unsuccessful in defeating them. He learns that he can escape by jumping on the dragon's back, and he does so successfully.