Sonic's Schoolhouse

In the original version of Sonic the Fighters, data can be found in the game’s files for a nearly-completed but ultimately-scrapped character called Honey the Cat. Honey would eventually become playable in the Xbox Live Arcade and Playstation Network ports of Sonic the Fighters! She can be selected by moving the cursor over Amy in the Character Select Screen and pressing the Start Button. Honey is directly based off of Honey from Fighting Vipers, the origin and direct inspiration of Sonic the Fighters (Sonic the Fighters is, basically, a stripped-down and wackier version of Fighting Vipers, which was developed by the same studio: SEGA AM2, who also developed Virtua Fighter and Daytona).

(https://www.youtube.com/watch?v=hmClOKsLJj4 - Virtua Fighter Arcade, Credits Theme)

Parts of E-105 Zeta's metallic framing are made up of SEGA Dreamcast models present within the game's files. The Dreamcasts can be seen on all versions of the game, implying that Zeta, at least partially, runs on Dreamcast technology. This can be seen in Gamma’s version of Hot Shelter.

Sonic Adventure (Dreamcast ver.) had its very own webpage.  Accessible through the game itself, it allowed the user to race in the World Rankings, go to the Chao Daycare, race Chao in the Chao Fun Room, download gifts to your VMU (the Dreamcast memory card), and race in downloadable events. A chatroom also existed on the Sonic Adventure Homepage.

(black lives matter - please consider checking out this masterlist of BLM sites to donate to and sign petitions for. https://blmsites.carrd.co/ thank you.)

(black lives matter - please consider checking out this masterlist of BLM sites to donate to / sign petitions for. https://blmsites.carrd.co/ thank you.)

(thank you. - @lastkeymusic)

(be kind to each other. - @lastkeymusic)

In Sonic Underground, there is a robotic chili dog stand with arms and legs whose entire purpose is to make and sell chili dogs to hungry costumers. Not only does it carry buns and hot dogs (and presumably - hopefully - a built-in frier), but it carries mustard and ketchup on its person as well.

(There are quite a few songs cut from Shadow the Hedgehog, actually.)

Metallic Madness

In Hang Castle, a statue of Dr. Eggman can be found. If the gravity is flipped upside down, the statue will turn into a Metal Sonic statue, which foreshadows Metal Sonic’s role as the final villain of Sonic Heroes (even though a few cutscenes and the trailer totally spoiled his involvement already).

(screencaps and renders made possible thanks to Dolphin Emulator’s Freecam)

At one point in Shadow the Hedgehog, Sonic says “Guess that means... welcome to the next level!” This is a reference to one of SEGA’s slogans during the 16-bit era, intended to boost the sales of the SEGA Genesis (Mega Drive), SEGA Game Gear, and the SEGA CD (Mega CD).

“In Sonic Adventure 2, in the Central Control Room of the Space Colony ARK, a digital display showcasing a number of Zodiac Symbols can be found at the Eclipse Cannon’s console. Their purpose, to this day, is unknown - perhaps it links to one of Gerald Robotnik’s abandoned projects.”

“In Sonic ‘06, it is revealed that Shadow’s IQ level is roughly around 200 after the events of ‘Town Mission 10: Agent Test - Intelligence’. Any IQ score over 160 is considered ‘genius’-level, which puts Shadow squarely into “genius” territory, and only 100 IQ below Dr. Eggman’s - considered by many to be the world’s greatest scientific genius - 300 IQ.”

“An Ichthus - the Christian fish symbol that many are familiar with - can be found in Sonic R’s Resort Island. This is a commonality shared between many of Traveller’s Tales’ games (the developers of Sonic R), likely due to founder Jon Burton’s christianity.”