Colour-emphasis games

The following is a list of games which make use of PPU register $2001's colour emphasis bits (D7 to D5):

Commercial

• Bubble Bobble for the Famicom Disk System uses red emphasis to tint the screen throughout the game, which is absent in the cartridge releases.
• The Fantastic Adventures of Dizzy uses it in the beginning when the scroll is unfurled.
• Final Fantasy and Final Fantasy II rapidly sets and clears all 3 emphasis bits to flash the screen when going into a battle screen
• Noah's Ark (E) uses blue emphasis combined with grayscale mode to put part of the level underwater.
• Super Game's Aladdin uses red emphasis to tint the screen during gameplay, and all 3 emphasis bits to dim when paused.

The following games set all 3 emphasis bits at once to dim the screen:

• Felix the Cat
• The Immortal
• Indiana Jones and the Last Crusade (Taito), story scenes and some action scenes.
• James Bond Jr
• The Jungle Book
• Just Breed
• Lagrange Point uses colour emphasis, in some frames combined with grayscale bit to do a very cheap fade-out effect when switching to and from the menu on the playfield, and also when entering into battle
• The Lion King (E)
• Magician
• Super Spy Hunter, when paused. The Japanese version Battle Formula doesn't do this.

Homebrew

• Wall by Chris Covell uses a blue emphasis to simulate the water flooding the wall.
• Graphics editor by Damian Yerrick allows applying a SCREEN TINT to the picture.
• Munchie Attack by Memblers dims the screen upon Game Over.

Romhacks

• Rockman 4 Minus Infinity (during Brightman's stage) darkens areas farther away from Mega Man.

References

• BBS topic
• BBS topic #2