Revert "RM Posio - LC 2021"

This reverts commit a4ac42bde7.

README.md

@@ -992,6 +992,7 @@ Multiplayer game servers and [browser games](https://en.wikipedia.org/wiki/Brows
 - [Minetest](https://www.minetest.net/) - An open source voxel game engine. Play one of our many games, mod a game to your liking, make your own game, or play on a multiplayer server. ([Source Code](https://github.com/minetest/minetest)) `LGPL-2.1/MIT/Zlib` `C++`
 - [MTA:SA](https://mtasa.com/) `⚠` - Multi Theft Auto (MTA) is a software project that adds network play functionality to Rockstar North's Grand Theft Auto game series, in which this functionality is not originally found. ([Source Code](https://github.com/multitheftauto/mtasa-blue)) `GPL-3.0` `C++`
 - [piqueserver](https://github.com/piqueserver/piqueserver) - Server for openspades, the first-person shooter in a destructible voxel world. ([Clients](https://github.com/yvt/openspades)) `GPL-3.0` `Python/C++`
+- [Posio](https://github.com/abrenaut/posio) - Geography multiplayer game. `MIT` `Python`
 - [QuakeJS](https://github.com/begleysm/quakejs) - QuakeJS is a port of ioquake3 to Javascript that can be played in a browser. `MIT` `Nodejs`
 - [Quizmaster](https://github.com/nymanjens/quizmaster) - A web-app for conducting a quiz, including a page for players to enter their answers. `Apache-2.0` `Scala`
 - [SourceBans++](https://sbpp.dev/) - Admin, ban, and communication management system for games running on the Source engine. ([Source Code](https://github.com/sbpp/sourcebans-pp)) `CC-BY-SA-4.0` `PHP`