Hello!
There certainly will be a client. Actually, we already have them for Windows and MacOS. As far as I know, the end of flash is on January 12.
Links to download clients:
Windows https://cdn.espritgames.ru/download/loader_en.exe?esc=site_com_tmenu
MacOS https://cdn.espritgames.ru/download/Esprit%20Games-0.7.4.dmg.