Overview of slot machines | Letou online casino bonus review. The casino acts like it has a license, however, upon closer inspection we found out it's either not valid. Established in , Letou was the one of the first Asian companies to provide. We offer a detailed review of Letou online casino in Vietnam. . Letou is a fully legally licensed global gaming brand with offices worldwide. In terms of Casino, there are around games available to play, of which about are slots. This website is officially authorized by the Government of Curacao to operate sports betting and casino products under license number GLH- OCCHKTW Letou Casino has a fake license. Compared to other Casinos, that is not that many. LETOU, first Asian entertainment services company to provide cash-based online gaming, has announced a partnership deal with Serie A giant.