# Extension Ideas

**URL:** <https://forum.makecode.com/t/extension-ideas/4668>\
**Category:** Arcade\
**Created:** [November 28, 2020, 2:49am UTC](https://forum.makecode.com/t/extension-ideas/4668 "2020-11-28T02:49:23Z")\
**Posts on this page:** 1\
**Showing post:** 13

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**Author:** ![shakao](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/shakao/32/113_2.png) [@shakao](https://forum.makecode.com/u/shakao)\
**Post date:** [December 3, 2020, 6:39pm UTC](https://forum.makecode.com/t/extension-ideas/4668/13 "2020-12-03T18:39:19Z")

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It’d be fantastic to see an extension for more effects or customizable effects! If you want an example to reference, @jwunderl made a small extension to add an effect that is like the rainbow “trail”, but it takes on the colors of the sprite it’s added to: [https://github.com/jwunderl/arcade-particle-effects/blob/master/extra-effects.ts](https://github.com/jwunderl/arcade-particle-effects/blob/master/extra-effects.ts)

Our in-game effects are defined in this file: [https://github.com/microsoft/pxt-common-packages/blob/master/libs/game/particleeffects.ts#L257](https://github.com/microsoft/pxt-common-packages/blob/master/libs/game/particleeffects.ts#L257)

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