this is sonic cd which was released for the sega cd  im reviewing the European version/ the Sega cd was called mega cd in Europe and Japan. So that's the main reason for the title  

Game intro It starts out with a song called sonic rules. And sonic footage



Plot there are two different endings  you will get a good ending if you collect all emeralds were everything is back to normal. Bad ending after sonic finishes off everything robotink will use the power of the chaos emerald to chain up the planet with sonic inside it.do to him chasing metal sonic  

.The main storyline is robotink is trying to take over the world. So he created metal sonic. To make sure sonic was evenly matched and robot ink hoping that sonic was defeated. So you mainly go playing as sonic in a whole bunch of different levels and most of them must be completed from the future or past part of the level. Amy ended up getting captured by metal sonic so you have to go rescue her and defeat metal sonic once and for all. 

Graphics these graphics are nearly a rehash or a remake of the sonic 1 graphics. The most difference you r goanna see is the main levels while they look similar .To sonic 1 the main order track of the levels . And the past and future part of the levels are the main difference. These graphics nearly look and play the same as sonic 1 which is a good thing . Because those graphics were great sharp and colorful for a genesis launch title. Graphics gets a 10. Nearly a rehash of sonic 1 with some minor changes

Game play the game play of sonic cd is also nearly the same as sonic 1  which was solid and good to begin with so no nit picking with the controls  were needed.  

Sound  again most sound effects are a rehash of the original sonic one game. Soundtrack the beginng intro just sounds too 90s i understand this was a 1990s game . but the intro singer is just awful. For the rest of the soundtrack is rather well done and takes advantage of the neat extra cd hardware that the Sega cd offered. Sound gets a 9  

Addictiveness the fast paced action was  the main point of the game. just like sonic 1. Infect this game was one of the main selling point of the Sega cd. i still like the fast paced speed. of it . Thank Sega for blast processing lol. Addictiveness gets a 8 the bad endings will just get irrating . But this game is still fun nonetheless 

Story I explained the good and bad endings as well of the main storyline . This storyline was somewhat  different from the other Sega genesis sonic titles . Considering its release. Story gets a 6 not a bad story but its nearly nothing that different it mainly involves sonic and robot ink trying to stop one another.

Depth  while I did find a music part of the game. The most part is your gonna see is the huge vairety of playable levels. Also if your good at translating Japanese text there it will a code allowing you to get a creepy sonic picture . I have not got it but I have seen it and boy it looks creepy.  Depth gets a 10 pretty long game. 

Difficulty 5 I didn't find the game that hard. You may differ from me because its dependant on how well you play the game. In general I didn't find it that hard. And the controls are very responsive and work well.  

Overall ratings 9.7 great game play  nice colorful graphics. Bad intro singer .Great soundtrack. Good looking footage in the intro with the Sega cd s full motion video hardware. 

edited the spacing. problem. edited crappy to creepy that was by accident to do spellcheck