There was a download of Extraterrestrial Grail 1.2.0.5 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The program is included in Games. This free program was originally created by Dan Simon. We recommend checking the downloaded files with any free antivirus. The most popular version among the software users is 1.2. ExtraterrestrialGrail.exe is the default file name to indicate the Extraterrestrial Grail installer.
From the developer:
The universe is teetering out of control and the aliens that inhabit it are getting restless. Rumors about total annihilation have spread through every corner of each galaxy. The rumor is that if one particular object can be obtained, then that alien’s race and home planet will be saved. Otherwise, their race will be exterminated and their home planet will be destroyed. One alien whispers to another, "What are we looking for?"
You may want to check out more software, such as Grail Quest, Occupation or Jane Angel: Templar Mystery, which might be related to Extraterrestrial Grail.