People often ask why some of the Sega Dreamcast games comes with a green "Hot! New!" sticker on the manual (or printed directly on the manual). This is to differentiate the first copies (without the tag) from the corrected copies (bearing the tag). Sega had some problems with some launch titles as they were badly pressed at one of their factories, the problematic titles were:

- Mortal Kombat Gold (Music skips and game can freeze)
- Hydro Thunder (had problems saving when trying to save on an almost full VMU)
- Ready 2 Rumble (Music skips)
- NFL Blitz 2000 (nobody really bothers about the glitch).


Those 4 games were reissued with the green tag "Hot! New!" to differentiate them from the first batch with glitches. The GD-Rom disc also had a different color on the first batch:

- Mortal Kombat Gold has a Yellow background on the no-tag version, reddish-orange on the corrected one.
- Hydro Thunder has a Blue background on the no-tag version, red on the corrected one.
- Ready 2 Rumble has a Yellow background on the no-tag version, red on the corrected one.
- NFL Blitz 2000 has a Blue background on the no-tag version, red on the corrected one.