Megaton Rainfall – Xeno Cubes / The Signs

A guide to find the Xeno Cubes.

How to Use Signs

You can do this before or after you do the final mission. If you do it after the final mission, you’ll have to do the final mission again to get the final xeno cube.


  • Ability to travel to other planets 
  • Heat Ray

Finding the signs

One of the most efficient strategies for finding a sign is to fly outside of the galaxy. Once you do so, you’ll notice a blinking light with an arrow pointing to it. This is Earth. There will be another blinking light with a higher pitch sound than the one on earth. Follow this and it will take you to a sign.

Using a sign

Using signs are pretty easy. Once you find the obelisk, there will be a beam of light coming from it, you’ll want to stand in front of this light. This will pull you into a prerecorded message which will loop until you move away from it.

Once you want to find the next sign, use the Heat Ray to destroy the obelisk. From here you back out of the solar system and repeat this process.


Suicide Achievement will be easy to aquire on the third sign and seventh sign.

First Sign

Located in the milky way. if you leave earth’s solar system it should be easy. if you leave the galaxy it’ll be easier.

Second Sign

This is located on an arid desert, very close to a star.

Third Sign

Trinary System (3 stars) with a black hole in the center.

Suicide Achievement

The suicide achievement is best to acquire while you are here (and may save you hours of searching). Below is the requirement to do the achievement. Fly into a black hole. thats it.

Fourth Sign

The Fourth sign is located on an astroid, which is amongst an astroid belt surrounding a black/purple planet.

Megaton Rainfall - Xeno Cubes / The Signs

Fifth Sign

Fifth sign is located on a gas giant, more specifically an astroid floating in the planet.
Planet is covered in black tornadoes as well.

Sixth Sign

Binary System (2 stars).
Located on a moon of a gas giant.

Seventh Sign

Located on a very hot planet, close to a star. The system also has a black hole.


To get the last xeno cube, you must complete the final mission after getting the first seven signs. You can do this after completing the final mission for the first time or before.

Written by Dovah

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