The package says the MSX2+ displays the MSX2+ graphics while the MSX2 displays the SCREEN 8 graphics. The manual states the gallery bootable from disk B shows the MSX2+ specific graphics on MSX2+. However in reality both the game and gallery graphics are same between MSX2+ and MSX2.
Pushing ESC while guessing the word reveals one character, though it consumes 100 yen.