I’m sorry, but I don’t have any information in my database about a video game titled ‘Many Block’ released in 1991 and developed by ‘Bee-Oh’. It seems to be quite obscure or possibly a mischaracterization of known titles from that era. Without further details or historical significance, it is challenging to provide a meaningful description. For any lesser-known or niche game, additional information from primary sources would be required to craft a detailed summary.