A brief update for this page :

I have added a direct link for the 64k version (note: some very large newer games need the 128k version)

The Release 15 version includes the following updates: 

; [+] Core code rewrites for speed in : parsing var/1op/2op, encode, 
;        dispatch, objects, attribute, properties, text buffer, 
;        stream3 
; [+] Code rewrite for tracking exceptions/errors 
; [+] Front end rewrite for speed in: cursor, text wrap, cache mem 
; [+] Increased cache size by 3 sectors in 64K version 
; [+] Bugfix: transcript now properly honours change to the
;        transcript bit 
; [+] Change: accented characters now filtered out in transcript