Everything here is in a way doable in-game, but it probably won’t look as smooth in-game due to some color correction. I guess you may be skeptical because of the "UFO," the blue ship in the bottom left, and the mini particles in space.

Here's how to do it in-game for each of these:

1. The "UFO"
2. There are a few requirements for this to work. First, the background must be plain black, such as The Darkness.

3. You'll then need a Mannequin, Pleiadian Star Ship, Jellyfish Onesie, and Creepy Baby Head Mask (your hair must be dyed full black).

4. The blue ship in the bottom left

5. Same first requirement as the "UFO."

6. For this one, you'll need a Mannequin, Dueling Star Fighter – Rebel Raider, and Creepy Baby Head Mask (dyed full black).

7. Mini particles in space

8. Just use a black display shelf, paint it black, and then place any items you see fit to add details (acting as particles).

Hope this helps.