Steve Harrison, the original developer of the tracker player Q The Music, has produced a new RISC OS module which allows games to be played on old Archimedes systems hooked up to modern monitors or televisions. LCDGameModes patches the screen modes that games use on the fly, such that they work correctly with a VGA or SVGA compatible screen. The effect of this is to prevent scrambled displays and fix the aspect ratio of "letter-boxed" games.
The software is currently in public beta, and is being discussed over on the stardot forums. One post shows Elite and Star Fighter 3000 starting up on a 40inch Samsung Telly.