Marcianito GO is a free simulation game available on Android developed by Alex π. The game is set in a fictional world where players can capture different types of martians by using energy levels to reveal their location and throwing Marciano Balls to capture them.

The game is centered around a sonar button that consumes energy levels from the top-screen bar to detect martians in the surrounding area. Once a martian is detected, it will show up in the radar screen. Players must quickly tap on the point in the radar to access the capture screen where they can throw Marciano Balls at the martian until it shakes three times. However, the number of Marciano Balls is limited and players can obtain more by opening chests detected by the radar.

Currently, there are 16 different martian species to capture, making the game even more exciting and challenging. The game's graphics are simple but vibrant, and the gameplay is addictive and easy to understand. Overall, Marcianito GO is a fun and entertaining game for all ages.