To make a Sonic game, you are going to need Sonic Sprites, a background, and Items.

The first thing you will need is the Title Screen and the SEGA logo.
To make the SEGA logo open Snipping Tool and then go to here.
Go to the very bottom and use Snipping tool to get the light blue “SEGA”
Name this Capture “Capture”
Start a new project and click “Load new sprite”. Click on “Capture” then select “Okay”.
Go in to the costumes and create a new costume. Name this costume “Flash”. Make another new costume, this time, name it “Empty”.
Go to code and put in this:

when green flag clicked
create clone of [ myself]
switch costume to [ Empty]
repeat (20)
switch costume to [ Empty]
go to front
end

Then, go back to costumes and go to “Capture”. Use the color dropper to get the light blue from the SEGA logo.
Go to the “Flash” costume and delete everything. Then, color the entire costume white and draw a light blue streak in the middle. Add a fade effect to the streak by making it half blue half white using the fill tool. Then, go to “Empty” and make the SEGA logo, empty. Keep the white. Then add this script to your code.

when I start as a clone
go to x: (-200) y: (0)
show
repeat (20)
go back (10) layers
switch costume to [ Flash]
change x by (10)
set [ pixelate] effect to (50)

end
hide
clear graphic effects
broadcast [ ShowLogo] and wait
switch costume to [ STP]
broadcast [ Fade]

Also, add this.

when I receive [ ShowLogo]
switch costume to [ Capture]
set [ brightness] effect to (100)
repeat (20)
switch costume to [ Capture]
change [ brightness] effect by (-5)
end
clear graphic effects

Now that you have that, got back to Spriters Resource and grab the dark blue SEGA logo.
Go to capture and replace the light blue logo, with dark blue using the color dropper.

Now, you have the SEGA Logo.

Since I think we are running a little to long, I will teach you a few more things before I make part two.

Go to the internet and search “Sonic 1 fonts” you should find this.
If you dont find it, you can just click on the glowing blue “this”.

Now, download that sheet and load it onto scratch.

Go to the section of that sheet that says

Credits/Sonic Team Presents

and use letters to spell your username and presents.
Then, select “Paint New Costume” and make the whole costume black.
Name that costume STPB
Name the costume with your name STP.
Now, add this code.

when green flag clicked
create clone of [ myself]
switch costume to [ Empty]
repeat (20)
switch costume to [ Empty]
go to front
end
switch costume to [ STPB]
when I receive [ Fade]
show
set [ ghost] effect to (100)
repeat (20)
go to front
change [ ghost] effect by (-5)
end
repeat (20)
go to front
change [ ghost] effect by (5)
end
hide

Welp, thats it for now. I will actually be making a YouTube Video on this soon so check my profile https://scratch.mit.edu/users/WhillieHotDog/
for updates! Also, if you would like to play the REAL Sonic the Hedgehog '91 then click here.