Other perils to Dan's life include running out of energy (caused by not collecting enough food, falling from heights and being hit by laser beams). If Dan should also fall into the underground river that flows beneath the building, the player will receive a game over unless Dan had picked up oxygen, in which case they will be sent back to the start of the game.
Other threats to Dan's survival include running out of energy (due to insufficient food or falls), being hit by lasers, and falling into the underground river. If Dan enters the river without oxygen, the game ends; however, if he has collected oxygen, he will be sent back to the beginning.