Diamond Rain 2 5.5 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. The actual developer of the free program is Falco Software Company. The program is included in Games.
From the developer:
Diamonds... Collect them to unlock new levels and interesting jobs. As levels advance you'll have to travel further and work harder to find them. Good luck!
You may want to check out more software, such as Diamond Caves 3, Diamond Caves or Diamond Draft 2011, which might be related to Diamond Rain 2.