# Defold-box2d Box2D extension **URL:** \ **Category:** The Defoldmine\ **Created:** [June 27, 2021, 11:08am UTC](https://forum.defold.com/t/defold-box2d-box2d-extension/68720 "2021-06-27T11:08:33Z")\ **Posts on this page:** 1\ **Showing post:** 8
**Author:** ![d954mas](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/d954mas/32/5401_2.png) [@d954mas](https://forum.defold.com/u/d954mas)\ **Post date:** [June 27, 2021, 7:00pm UTC](https://forum.defold.com/t/defold-box2d-box2d-extension/68720/8 "2021-06-27T19:00:12Z")
Defold alredy use box2d for 2d physics. But it used somewhere in engine, and we have very limit control on how it worked. With extension you will get full control. Here a great answer about defold box2d and full box2d. > [@Box2D extension - open source now](https://forum.defold.com/t/box2d-extension-open-source-now/63901/3): > > @astrochili I’ll make an overview video at some point. For now here is a brief list: Direct API access. You are not limited by Defold’s collision object interface. Full control of Dynamic and Kinematic bodies. In Defold it’s very hard to control them, for instance there is simply no way to set linear velocity or angular velocity for a body. Multiple simultaneous worlds. You can have as many separate simulations as you want. In Defold there is only one. Control over simulation speed. If you wan… --- _[View the full topic](https://forum.defold.com/t/defold-box2d-box2d-extension/68720)._