NessThe Japanese website for Yu-Gi-Oh! Master Duel has added some minor information about the game specs, namely the languages and requirements for the Steam version:
Languages:
-Japanese
-English
-French
-Italian
-German
-Spanish
-Korean
-Portuguese
This would match the languages available in the Official Database and Neuron, as well as the languages for most products with the notable exception being Chinese.
As for the requirements:
| Minimum | Recommended | |
| OS | Windows 10 Home (64bit) latest revision | Windows 10 Home (64bit) latest revision |
| Processor | Intel Core i5-7300U | Intel Core i5-9400F |
| Memory | 8GB RAM | 8GB RAM |
| Graphics | Intel(R) HD Graphics 620 | NVIDIA GeForce GTX 1650 |
| Resolution | 1280 x 720 | 1920 x 1080 |
| Hard Drive | 16GB+ | 16GB+ |
| Network | Broadband internet connection | Broadband internet connection |
| Sound | On Board | On Board |
| DirectX | DirectX 11 | DirectX 11 |
Source. (At the time of writing this article, the EN version of the website does not have this information)