DCS World not only includes the Graphical User Interface (GUI) that ties all DCS products together in a single installation, but it also includes the global aspects of the simulation world that pertains to all modules. This includes such items such as the Artificial Intelligence (AI), rendering system, mission editor, effects, AI units, semi-dynamic campaign system, and audio environment.
When a user purchases a DCS module, the module only includes content specific to that module. Thus, it requires DCS World to run.
We will release DCS as an Open Beta using a web installer. This open beta install will be complete version that resides in parallel to your release DCS World install and have separate configuration files located in Saved Games\DCS.openbeta\. Once you download the open beta, you will use the Module Manager to install your modules. We particularly hope that this, combined with the automatic track crash generator, will help us resolve remaining network issues prior to the final release version of DCS. This is an optional beta, and if you do not wish to take part, you certainly do not have to.