> For the complete documentation index, see [llms.txt](https://multiset.gitbook.io/multiset/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://multiset.gitbook.io/multiset/basics/mapset-multiple-maps/merging-maps-with-overlap.md).
# Merging Maps with Overlap
Overlap-based merging is powered by the **MultiSet VPS** under the hood, so it is far more robust than traditional geometric methods (ICP, low-level feature matching) and works even when two scans share only a small overlap area.
### Create a MapSet with Overlap
Click on Create MapSet -> **Merge Maps with Overlap**
### Select the Origin Map and then a Map that overlaps with it.
Select an Origin Map this could be the first map that you want to add into your MapSet, this map act as the origin of your MapSet coordinate system.
In the next steps, you MUST choose a Map that has a decent overlap area with the Origin Map (we recommend having around 5-10 meters of overlap between maps to be merged or 15-20% overlap area between that needs to be merged).
After this, give a MapSet name and wait for a couple of minutes for the Map merging process to be completed
### Add a new Map to an existing MapSet
Open the MapSet details page and then click on **Add Map** to add a new Map in a MapSet
First, select the new Map that you want to add and then choose an existing Map from MapSet that has overlap area with the new Map.
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