In Space Expedition Jumper, players control a cute boy who is on a mission to collect stars and defeat aliens. The game is set in space and features a vibrant and colorful sci-fi world.

The gameplay revolves around jumping and shooting. The boy has a jetpack that he can use to jump across the screen and collect stars. Players need to time their jumps carefully to avoid obstacles and enemies, which include purple spiked aliens that move around the screen.

In addition to jumping, the boy can also shoot at the aliens with his laser gun. Shooting the aliens can earn the player extra points and power-ups. Some aliens require multiple hits to defeat, and others have different attack patterns, which adds variety to the gameplay.

The game has several levels, each with a different background and set of obstacles. As players progress through the levels, the difficulty increases, and new types of enemies and obstacles are introduced.

Overall, Space Expedition Jumper is an action-packed game with simple controls, addictive gameplay, and cute graphics that will keep players entertained for hours.