Tl;dr: Human-powered Spacecraft is a very short but well-crafted idle game that has humorous elements with a fun story.

Human-powered Spacecraft has a humorous nature aside from being an excellent but short idle or clicker game. Each game element you encounter has humorous parts that put a smile on your face, and it is enjoyable to progress in the game. The game can be completed in half an hour, which is the worst part about it since you would certainly want to have a longer, well-crafted experience.

The game has an amusing narrative touch. It is not just a number engine but a charming little companion almost. Twists are apparent, and the story is a bit cliché, but they all tie great around the humor elements in the game. If it was not for the story and narrative, I believe the game would lose its charm.

Idle and clicker systems are not too deep but thought-on. The game gives you enough depth, so you can choose between a more passive gameplay or an active one while sometimes requiring input so you can progress with the different acts in the game. The game is just great regarding its gameplay systems.

In the end, if you don't mind the length of the game, Human-powered Spacecraft is an excellent game to play for a quick dopamine boost, and it definitely is worth its price. I recommend it!

Skip it.