Looking for a comprehensive guide to Russian history and mysteries? Look no further than Великие загадки РоссииСССР! This Android app from biika.studio offers 100 of the greatest mysteries in Russian history, from ancient times to the post-Soviet era, all in one convenient location.

Whether you're an academic, researcher, or treasure hunter, this app is the perfect companion to help you uncover the secrets of your homeland. With detailed information about everything from the lost library of Ivan the Terrible to the existence of a Russian Atlantis, this app is sure to satisfy your curiosity. And with insights into topics like time travel, the Russian Yeti, and the roots of Leonardo da Vinci, there's something for everyone in this comprehensive guide.

All information is taken from open sources, so if you have any comments or suggestions, please send them to the developer's email and they will take the necessary measures.