Step 1:
These four colored papers are for the Pacman Ghosts. The backside of them is white.

Step 8:
Valley-fold.

Step 6:
Press both parts flat, see next picture for help.

Step 13:
Use tape or glue to make the model flat

Step 12:
Draw funny eyes.

Step 11:
Start with the upper line.
And tape the edges in the center together.

Step 10:
Mountain-fold over both lines.

Step 9:
Close the model again.

Step 5:
Open the flaps with your fingers

Step 7:
Open the model

First, prefold in half. Then fold both edges to the centerline.

Step 3:
Press these two places flat

Step 2:
Fold both corners upwards

Step 4:
Fold both flaps straight upwards

Step 14:
Press / fold the bottom edge inwards on three places.

Step 15:
Press these two corners flat between your fingers.

Pacman is the most popular arcade game ever. It's released in 1980 and developed by Namco from Japan.

Done..... What a mess! I'll never win this game :(

This video by Joost Langeveld also shows you how to fold the Pacman Ghosts: