- Namco Pac-Man is a playable machine in Ridge Racers, Ridge Racer 2 (PSP), Ridge Racer 6, and Ridge Racer 7, seen riding different vehicles related to flying vehicles.
- Soundtracks in R4, RR5, RR6, and RR7 each comes with one original Pac-Man track.
- Pac-Man is a playable minigame in Ridge Racer 6. The split time indicator on the bottom left of the screen is Pac-Man themed.
- DLC Kamata SYNCi comes with the Pac-Man skin in Ridge Racer Vita.
- In Ridge Racer V, many of the names of the top times in the record screen are based on those from Ace Combat 3: Electrosphere. The names include Dision, Fiona and Cynthia.
- The Ridge Racer (PSP) and Ridge Racer 2 (PSP) iterations of Seaside Route 765, Edge of the Earth and Brightest Nite feature commercial airplanes decorated in the colors of Air Ixiom.
- One of the bodykit manufacturers in Ridge Racer 7 is called Arkbird.
- A nitrous oxide manufacturer is named General Resource.
More information: Soulcalibur Wiki
- More information: Klonoa Wiki
- Klonoa 's name is printed on some boards along the sides of tracks and on top of buildings in Ridge Racer 6 & 7. His name is also on some car liveries.
- His ally, Popka , also features on some car liveries too.
- Race products and sponsors: Solvalou, Bacura, Andorgenesis Wheels
- RT Solvalou is a team in Ridge Racer Type 4.
- Many enemies and the players ship, the Solvalou, from the series appear as liveries in the Ridge Racer franchise.
- Xevious is a playable minigame in Ridge Racer 7.
- Solvalou and Bacuras randomly appear in Mist Falls in Ridge Racer 7.
- Pac-Man in Ridge Racer 7 is piloting a floating Andor Genesis, with it's speedometer shaped like it and numbers are in Xevian.
- Race products and sponsors: Xiaoyu, Mokujin, Yoshimitsu, Tekken
- Death by Degrees is seen on a billboard in Ridge Racer 7. That game stars a Tekken fighter, Nina Williams.
- Tekken Tag Tournament 2 and Tekken Blood Vengence (CGI movie) appear as billboards in Ridge Racer Vita.
- Lili drives a Danver 4x4 in Tekken 6
- New Rally-X is a playable minigame in Ridge Racers and Ridge Racer 2 (PSP).
- Namco New Rally-X is a playable machine in Ridge Racers as a special machine.
- The split time indicator is New Rally-X themed in Ridge Racer PSP games.