I know morphy is not the only game that did this.
There was some sort of mini-golf like game, but can not remember the name.
Just found that one:ball 2.0 a.k.a smart ball
I think i remember reading some place there was a maze/labyrinth game that used a sprite in TI Basic too.
Anyway, a list of all known "sprites under ti basic" games would be good.
Here is a program called FASTINIT that works with Morphy, at least in Win994a with a cassette. This initializer is set to give the normal size sprite used in Morphy, and sets the memory pointers to not reserve the disk buffer space.
Load this and save to cassette, then load morphy and save to cassette.