Commander Keen in Goodbye, Galaxy!: Secret of the Oracle

In "Commander Keen in Goodbye, Galaxy!: Secret of the Oracle," the game's fourth episode, players control protagonist Commander Keen as he travels to an alien planet to rescue the Keepers of the Oracle. These Keepers hold the knowledge of the Shikadi, a powerful and mysterious enemy that Keen has been fighting. The episode contains eight levels filled with puzzles, platforming challenges, and enemies to battle. The game combines action and adventure elements to create an engaging and immersive experience.