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The ending depicts the astronaut on a planet in space with partially pink and feminine looking astronaut in front of him, two domed shaped house behind her, and a black hole present on the far left side. Words above, in white text outlined in blue, read, "congratulations!" with smaller words below in blue text reading, "you made it home!".
Brain aliens - It walks slowly around and causes one heart to be lost if touched.
Blue masked robot - It will move when the Astronaut moves and stop when he does. When touched one heart is lost.
Green masked robots - A faster version of the blue masked robot, it too will also follow the astronaut. If touched one heart will be lost.
Worms - It moves slower than the blue masked robot and will follow the player. It will always take the faster route to the astronaut.
Electric planets are big and covered with metal. After a few second they will make their surface of them covered with blue electricity. A well timed jump will allow the Astronaut to not take damage from the electricity.
Hot planets are the most dangerous planet encountered. They have a black crust on them that allows safe travel around them. But in between the black crust is harmful red liquid. Sometimes there is small parts of the black crust that is between large parts of liquid.
Ice planets have a slippery surface that causes the Astronaut to move slowly in one direction but will soon speed up over time.
Clicking the Nitrome logo in the credits section will take the player to the Nitrome website, except it will be displayed inside the game window. This also happen with the browser version of Silly Sausage in Meat Land.
Space Hopper is also the name of a level in Go Go UFO.
Space Hopper is one of the few games by Nitrome to have smooth anti-aliased graphics, rather than their traditional pixel art style.