# Help with 'ghost through sprites' block?

**URL:** <https://forum.makecode.com/t/help-with-ghost-through-sprites-block/39100>\
**Category:** Help\
**Created:** [September 7, 2025, 7:59pm UTC](https://forum.makecode.com/t/help-with-ghost-through-sprites-block/39100 "2025-09-07T19:59:25Z")\
**Posts on this page:** 1\
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**Author:** ![WoofWoof](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/woofwoof/32/32523_2.png) [@WoofWoof](https://forum.makecode.com/u/WoofWoof)\
**Post date:** [September 8, 2025, 3:48pm UTC](https://forum.makecode.com/t/help-with-ghost-through-sprites-block/39100/2 "2025-09-08T15:48:17Z")

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Sprites don’t have built in collision. The “ghost through sprites” flag is for if they set off “on sprite overlap” events. I believe @Sonicblaston made an extension for this:

> [@Sprite Walls Engine – Extension](https://forum.makecode.com/t/sprite-walls-engine-extension/33627):
>
> Sprite Walls Engine – Extension Sprite Walls Engine is an extension that allows you to use sprites as walls instead of tiles. It also includes a pushable sprite block, that lets you, well push sprites. Features Sprite-Based Collision – Use sprites as solid walls. Pushable Objects – Create objects that can be pushed by the player or other sprites. Versatile Sprite Interaction – Works with both individual sprites and SpriteKind groups. How It Works This extension uses AABB (Axis-Aligned Boun…

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