Halo Online was a free-to-play first-person shooter developed by 343 Industries and Saber Interactive, and published by Microsoft Studios and Russian publisher Innova Systems. The game is based on a heavily modified version of Halo 3 (Blam! Engine), optimized to be run on lower-end PCs. A closed beta for the game took place in Russia in spring 2015, but the game was later cancelled with no plans to launch it in other countries.
Later, a fan-made mod called ElDewrito revived the game and allowed it to be played worldwide. It gained increased popularity upon the release of Version 0.6, which included many added features that increased its stability and accessibility.
ElDewrito is a community-made mod for Halo Online, a cancelled free Halo 3 derived PC game for the Russian market. It allows the game to be played in player-hosted servers and aims to restore removed features, fix bugs and glitches, and add mod support.