Deponia: The Complete Journey contains three games at once. The release presents the original first part, which marked the beginning of the entire series. It also included a sequel to Chaos on Deponia and a threequel called Goodbye Deponia. The fourth title in this franchise is not included in the collection.

Deponia: The Complete Journey is a re-release. It includes a world map, walkthrough, and mini-game guides. The soundtrack has been replenished with 6 new compositions. The games themselves now have additional hidden items. In addition, the creators recorded 4 hours of commentary about the development process and invited actors to give their voices to the characters for interviews. The developers also added videos showing what was left behind the scenes.

All titles are classic quests. They use two-dimensional hand-drawn graphics and are controlled by the mouse. The gameplay is quite traditional: the protagonist walks through locations, communicates with NPCs, solves puzzles, collects things in his inventory, and then uses them somewhere. The hero's name is Rufus. The guy dreams of getting away from the trash planet called Deponia to the city of Elysium floating above its surface, where the elite live. When he tries to escape, the Elysian Goal falls from the cruiser and loses consciousness. It turns out that her boyfriend looks very similar to the main character. An unsuccessful inventor decides to take advantage of the situation and impersonate her fiancé in order to find himself in a utopian metropolis.