Here is a list of games in which most, if not all, of the default responses have been replaced by a custom response.
There are prominent examples of such games, and they seem to be popular in the general audience, which could be explained by the fact that every input is rewarded by a custom response (instead of a more boring one).
The technique can be used to establish a strong voice for the game, or a strong PC character (or even, in some cases, a strong NPC, equated to the parser voice). This has been dubbed 'extreme characterization' by mathbrush, and I like that term, for literally every occasion is used to establish the character's voice.
The technique requires some work, but increases immersion; however it can maybe distract the players from the story.
1. Lost Pig
by Admiral Jota
Average member rating: (432 ratings)
by Jeremy Freese
Average member rating: (337 ratings)
3. For a Change
by Dan Schmidt
Average member rating: (106 ratings)
4. Brrr!, by Hugo Labrande (2007)
Average member rating: (4 ratings)