Nikopol: Secrets of the Immortals is a point-and-click adventure based on the art and stories of Enki Bilal. Set in France in the dystopian near future, you guide Alcide Nikopol after an alien spaceship in the form of an Egyptian pyramid arrives in the Paris astroport.
Being an adaptation of an existing literary work, there are a few considerations that should be made for the story. This game is based on the first book of a trilogy of novels, The Carnival or Immortals or La Foire aux immortels. The adaptation is cut and watered down, but this isn't necessarily a bad thing; if the story interests you, you may want to pick up the novels, and you would still find new content in the first book, so you have a reason to read the entire series.
Originally released in 2008, the animated cut scenes definitely show their age, while the prerendered backdrops still hold up fairly well. Gameplay is standard point-and-click affair, you have a small inventory of held items to run on other things and progress the story. It is somewhat flawed by the fact that you can miss important objects early in the game that prevent progress later on, which can ruin your game if you aren't using a walkthrough. On the other hand, the game is pretty short (3-4 hours if you know what you're doing), so you may see the lack of hand holding as an element of difficulty.
Overall, a flawed but intriguing game. Fans of the books may be disappointed by the lack of depth, but newcomers will appreciate the dark atmosphere and may find themselves picking up the novel series as a result.