Game Overlay 1.0 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The software lies within Games, more precisely Utilities. This software was originally developed by GameOverlay.com. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
Game Overlay helps get back some of the multi-tasking functionality lost when playing full-screen games. It allows you view and interact with windows outside the game, but without "Alt-Tabbing" and requiring the game to reinitialize its graphics. It does this by actually rendering the window inside the game! For example, it could be used in the following ways... Keep up with the conversation...
You may want to check out more software, such as Mz Game Accelerator, GAMS or GmR Game, which might be related to Game Overlay.