2D physics test

Hi everyone

I am trying to get 2D physics in the Blender Bullet physics engine.

1st Attempt

[video]https://www.youtube.com/watch?v=j8Y8Ju5Dzs8&context=C4a01b7cADvjVQa1PpcFMvH8iih_yN5J0KST2qke9b ZAFuDr7EBVs=[/video]

2nd Attempt

[video]https://www.youtube.com/watch?v=oyWSpcAg4WU&context=C45a9d6eADvjVQa1PpcFMvH8iih_yN5GHs6Orq5MRW 63yz6gtjgB8=[/video]

You can download the blend file here

1st Attempt: I unfortunately don’t have it
2nd Attempt

Please critique them and tell me what you think.

I like the second one better, anyway I notice in both of them that none of the squares rotate at all they just slide past each other. Not sure if you were going for that look or not but it was just something I noticed.