Due to being text oriented and some games running via in-line emulators (Commodore 64 and ZX Spectrum), using a desktop is recommended.
The Direct Interpreter games run ok on desktop, tablet and mobile.
Mini Zork I
Lords Of Time
Mountains Of Ket
The Hitchhikers Guide To The Galaxy
Mainly from the ZX Spectrum era - circa 1982 to 1985. Although some from the Commodore 64 during the same era. There are also some text adventures playing directly from the interpreter.
Recently added some modern text adventures.