# Catan Universe Changelog 2.3.3

- Product: Catan Universe (https://whatsnew.fyi/product/catan-universe)
- Vendor: Client/Frontend: Endava  / Backend: SuperNimbus
- Date: 2023-05-24
- Original notes: https://store.steampowered.com/news/app/544730/view/3678923498447035390
- Permalink: https://whatsnew.fyi/product/catan-universe/releases/2023-05-24-changelog-2.3.3

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Older client versions can no longer connect to the server
- **changed** — Optimized game actions in multiplayer
- **changed** — Optimized overall stability
- **changed** — Increased reliability for matchmaker and filters

Dear Catanians,

Today, May 24th 2023, we are releasing update 2.3.3 Please note that from now on, you will always need the latest client version to log in. If you try to log in with an outdated version 2.3.2 and lower, you will see an error message and a notification in the login screen.

**Changelog:**

- Older client versions can no longer connect to the server. Please update to 2.3.3 to log in.
- Optimizations to game actions in multiplayer
- Optimizations to increase overall stability
- Increased reliability for matchmaker and filters