Reasons why Tumblebugs may not be working (the game flashes or doesn't play correctly)
- Renderer settings need to be changed
Solution - Adjust renderer settings
1. Launch the game and click on 'Options'
2. Change 'Renderer' settings to 'OpenGL'
3. Click OK and Quit the game.
4. Re-open the game again and you should now be able to play without the game flashing.
Any further questions? Please contact Customer Support as they're always ready to help!