I suppose this is possible, but another game called Killswitch was made for PS2 a few years ago so it's nearly impossible to find useful information on the subject.
"In the spring 1989 the Karvina Corporation released a curious game, whose dissemination among American students that fall was swift and furious, though its popularity was ultimately short-lived.
The game was “Killswitch.”
On the surface it was a variant on the mystery or horror survival game, a precursor to the Myst and Silent Hill franchises. The narrative showed the complexity for which Karvina was known, though the graphics were monochrome, vague grey and white shapes against a black background. Slow MIDI versions of Czech folksongs play throughout. Players could choose between two avatars: an invisible demon named Ghast or a visible human woman, Porto. Play as Ghast was considerably more difficult due to his total invisibility, and players were highly liable to restart the game as Porto after the first level, in which it was impossible to gauge jumps or aim. However, Ghast was clearly the more powerful character–he had fire-breath and a coal-steam attack, but as it was above the skill level of most players to keep track of where a fire-breathing, poison-dispensing invisible imp was on their screens once the fire and steam had run out, Porto became more or less the default.
Porto’s singular ability was seemingly random growth–she expanded and contracted in size throughout the game. A Kansas engineering grad claimed to have figured out the pattern involved, but for reasons which will become obvious, his work was lost.