One situation I think would make a great video game level is having Superman awake in the Phantom Zone confused and with an unclear memory of who he is and how he got there. It would be similar to his confusing in the Superman Godfall story when he is trapped in the Bottle City of Kandor. He awakes unsure of who he is and how he got there, and he has to battle a number of Kryptonian and galactic villains who hate the son of Jor-El, who served as their jailor. Each villain he encounters and defeats reveals more information on how he got trapped in the Phantom Zone and who he is, until the pieces come together and Superman’s memory returns. He then must find a way to escape the Phantom Zone and get back to Earth in time to stop Zod from killing billions of people on the planet like he did to the Pocket Universe post-Crisis on Infinite Earths during the Byrne era.