Complex Obstacle Drop

Part of the Learning Flow:
Animation in Blender

Interested in this Exercise?

Watch the course trailer to see what's inside, read the about tab, and then start learning on CG Cookie today.

Watch course trailer Start Learning

Login with your CG Cookie Citizen Account to ask a question.

Start Learning
  • Software: Blender 2.78
  • Difficulty:

Upping the Ante


This exercise is designed to be an application of the information learned in Chapter 3 of the Animation Bootcamp course, especially the Obstacle Drop I and II lessons. The assignment is essentially to animate a physics simulation. Using two or more different kinds of balls and an uneven ground, your challenge is to animate believable bounces and chain reactions that occur between your different balls. You can choose a simpler 2-ball interaction or more balls for a bigger challenge. Simple obstacle drop Complex obstacle drop


  1. Download the Complex Obstacle Drops: Source Files from the Downloads tab. Unzip and open one of the included .blend files with Blender. Also you're welcome to create your own variation of balls and ground.
  2. Animate 2+ different types of balls dropping on an uneven ground and achieve believable chain-reaction-bouncing for each according to its type.
  3. Render your animation as an openGL viewport render.
  4. Upload your video to YouTube or Vimeo.
  5. Finally, submit your exercise by clicking the Submit Exercise button in the top-right corner of this page and pasting your video's URL.

Rules of the Exercise

  • 1
    Animation for 2 or more balls is believable and involves physical interaction between balls.
  • 2
    Submission is in video format.
  • 3
    Use one of the scene files provided or make a variation of your own.
Heya! Login with your CG Cookie Citizen account to download Exercise files.
  • Needs grading:
  • Graded:
  • Passed:
  • Did not pass:

Level 8

Rank: 6
Since 2009, I have been producing high quality character animations for everything from commercials to children's music videos. Working remotely for several small studios, I have been responsible for the rigging and animation of several videos that have received over 100 million views on Youtube. (Making for some very happy clients.)