Sonic The Heghehog 1 Codes - Genesis

Bonus Points 
from John Isles, IV 
For extra points, pass any zone in a certain amount of time. For the best bonus, 
enter the Debug Mode code. The clock will freeze and you'll always score a
50,000 bonus! 

Time Points
0:30 50,000
0:45 10,000
1:00 5,000
1:30 4,000
2:00 3,000
3:00 2,000
4:00 1,000

Confused Demo 
from Simon Jackson 
While the demo is playing, hold A + B + C. Sonic will get confused, lose his 
place, and possibly die. 

Control Mode 
At the title screen, press Up, C, Down, C, Left, C, Right. While playing, you 
can pause the game and use A to restart, B for slow motion, and C for frame
advance. 

Debug Mode 
Enable Control Mode. After pressing Start to begin a game, hold A until you see 
Sonic. If you see a bunch of hex numbers on the top of the screen, you're in
Debug Mode.

To start debugging, press B, then you can select any sprite in that level and 
put it on the screen. To select a different sprite, press A, and to place it on 
the
screen, press C. Note that sprite selection is different from Zone to Zone. 
Also, instead of displaying the time elapsed, it displays the number of sprites
currently on the screen. Control Mode functions work as well.

Note: This only works on the first production releases of Sonic. 

Extra Lives 
In Green Hill Zone - Act 3, there is a 1-Up at the very bottom of the level. 
Collect it along with enough rings to make 100 for a second life. Next, grab the
1-Up at the top of the loop-de-loop and die. Repeat until you have enough lives. 


Get all Emeralds 
This cheat allows you to start at the First Level with all the Emeralds, and 
with lots of Continues. Use the Level Select cheat (see above) to get to the 
Special
Zone. When you get the Emerald, and have entered into the First Zone, press 
Reset.

Use the Level Select cheat to get to the Special Zone again. When you get the 
next Emerald, and have entered the First Zone, press Reset again.

When you have all the Emeralds, continue on with the first level. You get to 
keep the Emeralds and the Continues accumulated so far. 

Level Select 
At the title screen, hold A then press Up, Down, Left, Right. When you hear the 
chime, press Start. 

If that doesn't work, try this: at the title screen, press Up, Down, Left, 
Right, hold A, and press Start. After doing this once, you only need to hold 
Start +
A to enter the level select. 

Marble Zone Shortcut 
from Ken and Renee Clay (kclay@bellsouth.net) 
In Marble Zone act 3 you will find three chandeliers with spikes in them. Go to 
the far wall (on the right) and jump to the right to find some goodies. Now
jump through the wall on the right again, but be careful of the other 
chandelier. 

Scrap Brain Teleport 
On the last level (Scrap Brain), find the ledges that move right then left. Go 
to the left side of the wall and wait for the platform to move. As soon as it 
starts to
move left, duck. You'll go through the wall. While here, press Left to teleport 
right and Right to teleport to the left.