I just did a test on the AndEnginePhysicsBox2DExtension. The test adds animated(!) boxes and circles (Ratio 50%-50%) to a scene and logs the FPS.
210 Objects (105 Boxes + 105 Circles)
This is the resulting graph on three different devices:
- Nexus One – Android 2.2 – 800×480 pixels
- HTC Tattoo – Android 1.6 – 320×240 pixels
- HTC Dream/G1 – Android 1.6 480×320 pixels
In my opinion the result on the Nexus One running Android 2.2 (Froyo) is very very impressive – 200 Objects at almost playable 20 FPS!
Even on first-generation, low end devices you can get more than 30 FPS with about 40 objects.