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