On Act 3 of the Icecap Zone, turn into a ball at the end before you reach Robotnic and fly
off a ramp onto a purple trampoline. Look up to see a large number of rings. Bounce high
enough to find another whole set of rings. Go to the right far enough to find a big ring.

Set off the first alarm on the first level of the Launch Base Zone. Wait in the middle of
the alarm and perform Spin-Dash attacks on the Flybots. The value of the Flybots will
eventually increase to 10,000 points as they continue to attack. Accumulate points and
lives at this location.

By default, the game is set to the Japanese version. Press Up, Z, Down, Z, Left, Z, Right,
Z at the Sonic The Hedgehog information screen to unlock the North American version. Press
Z(9), Up, Down, Left, Right to play the alternate Japanese version.

Press A or B to make the beans jump on the title screen.

Go into Sonic The Hedgehog, Sonic The Hedgehog 2, Sonic The Hedgehog
3, and Sonic And Knuckles and exit repeatedly until you see that the game log
recording message is gone. When all gamelogs for Sonic The Hedgehog 1 through 3 and
Sonic And Knuckles are gone, Sonic The Hedgehog 3 And Knuckles will be
unlocked.

Get all of the Chaos Emeralds and transform into Super Sonic. Try to have at least fifty
rings when you finish the level. After completing the level, run off screen and wait until
the end-of-level sign shows Sonic. When it does, transform into Super Sonic. The sign will
show Super Sonic for one second, then show blue Sonic again.

Enter "DOFEEL" as a password.

Enable the "Cheat mode" code. Select the "Bonus level" option on the level selection
screen. Obtain the Chaos Emerald, reset the game, and repeat the process until all of them
are in your possession. Allow the game to continue after obtaining the last Chaos Emerald
to start in the Green Hill Zone.

Start a game with Sonic. Run over to where the Super Shoes power-up and Madmole creature
are right next to each other. Directly to the right of the Madmole is a pulley mechanism
that takes you to the next level above by pushing Down on it repeatedly. Grab a hold of
its left handle, but instead of pushing down, push the follow sequence while on it:
Left(3), Right(3), Up(3). If you entered the code correctly, you will hear the sound of a
chime. After hearing the chime, press Start to pause the game, then press B. You will be
sent back to the Sega logo and title screen. Wait for the introduction sequence to end,
then when the selection for choosing Sonic or Knuckles appears, press Start while holding
B.

Enter the "Sound Test" screen. Choose sounds 1, 6, 7, 7, 7, 2, 1, 6 (in that order).

Begin game play in two player vs. mode and hit as many item boxes as possible until you
get the speed shoes. Then, intentionally lose your life while you have them (getting
squashed is the easiest way). You will return to the start of the level or the last Star
Post that you hit, but you will now have the speed shoes in effect for the rest of the
stage.

You can almost always have the Special Zone entrance open (the giant ring next to the
sign at the end of level Acts 1 and 2) by not losing your rings. If you do lose your
rings, when you pass a checkpoint, intentionally die, then continue through the level
without losing any rings. This works about 80% of the time.

Sonic The Hedgehog 2

Go into exercise mode, wait until you get a Blue/Green bean, and try not to cover it. When
you see a Has Bean come into the dungeon, put it on top of the Blue/Green bean. This will
usually give you more points.

Enter "MAGURO" as a password.

Begin a new game and hold Up + A + X + Start before the first round appears. Release
the buttons at the "Round 1" screen. Press Up or Down to select a starting round.

Ristar

Collect the extra life at the very bottom of Green Hill Zone - Act 3. Accumulate 100 rings
to obtain another extra life. Collect a third extra life located at the top of the
loop-the-loop. Intentionally lose a life and repeat the process.

At the title screen, press Up, X, Down, X, Left, X, Right, Up, X, Down, X, Left, X, Right,
X. Then, hold B and press Start. Begin a game, then press A to enter debug mode.

In the 2nd Zone and 3rd Act, before fight Dr. Robotnik, allow your character to almost
drown, then put your head back up in air (touch the starpost but down jump in it).

In Wing Fortress, move with some rings as far to the right as possible without climbing.
When blades appear to block your way, hit them. As soon as you are invincible, walk
through them. Jump on the platforms to the right and half the level will be completed.

After the Sega logo fades and Sonic starts to appear, and before the screen flashes white,
quickly press Up(2), Down(2), Up(4). If you entered the code correctly, you will hear a
chime. Press Up at the title screen to access level select and sound test options.