Sonic Chaos

Sonic Chaos is an official 1993 platform game developed by Aspect and published by Sega for the Game Gear and Master System. Known as Sonic & Tails in Japan, it lets players choose between Sonic the Hedgehog and Miles "Tails" Prower in an original 8-bit adventure with six zones and character-specific abilities.

Dr. Robotnik has stolen the Red Chaos Emerald, causing the remaining Emeralds to scatter into another dimension. Their disappearance threatens the stability of South Island, leaving Sonic and Tails to stop Robotnik and restore the Emeralds.

Gameplay and Objective

Choose Sonic or Tails and travel through six side-scrolling zones, each containing three acts. The first two acts involve reaching the goal while navigating enemies, platforms, springs, and environmental hazards. The third act generally leads to a boss encounter.

Both characters can run, jump, and roll, but their special abilities change how they approach the stages. Sonic focuses on acceleration and speed-based techniques, while Tails can fly for a limited time to cross gaps and reach elevated platforms.

Collecting Rings protects the character from damage. Some monitors provide additional items, including shields, temporary invincibility, speed boosts, and extra lives.

Sonic and Tails' Special Abilities

Sonic's Spin Dash: While stationary, hold Down and press the jump button to charge the move, then release Down to accelerate forward in a rolling attack.

Sonic's Strike Dash: Sonic can also perform a standing acceleration move, sometimes called the Super Peel Out. Hold Up while stationary and press the jump button to build speed, then release Up to launch forward.

Tails' Flight: Tails can use his twin tails to fly for a limited period. This helps him reach platforms and cross gaps that would otherwise require more precise jumps.

Rocket Shoes: This temporary power-up allows Sonic to fly through the air. When playing as Tails, the corresponding monitor awards additional Rings instead.

The game also introduces Pogo Springs, which allow the character to bounce upward using a portable spring.

The Six Zones

Sonic Chaos features six original 8-bit zones:

• Turquoise Hill Zone: A grassy opening area featuring slopes, loops, and springs.
• Gigalopolis Zone: An urban environment with mechanical obstacles and platforming sections.
• Sleeping Egg Zone: A mechanical area featuring unusual structures, platforms, and hazards.
• Mecha Green Hill Zone: A mechanical reinterpretation of a grassy environment, combining familiar scenery with robotic elements.
• Aqua Planet Zone: A water-themed area with underwater passages and obstacles that affect Sonic's movement.
• Electric Egg Zone: Robotnik's final mechanical stronghold, where the adventure reaches its conclusion.

These zones were designed for Sonic Chaos rather than copied from a Genesis Sonic game. The Game Gear release also contains some differences in presentation and stage details compared with the Master System version.

How to Enter the Special Stages

Only Sonic can enter the five Special Stages. To access one, collect 100 Rings during Act 1 or Act 2 of a zone. Sonic will automatically enter a Special Stage as soon as he reaches the required total.

Unlike the checkpoint-based Special Stages in some other Sonic games, there is no Giant Ring or special entrance to locate. Reaching 100 Rings triggers the transition directly.

Each Special Stage has its own layout and challenge, including Rocket Shoes flight, vertical platforming, and mazes connected by high-speed tubes.

Sonic has approximately one minute to reach the Chaos Emerald before the timer expires. Successfully collecting the Emerald completes the challenge and returns the player to the main adventure.

Collecting All Six Chaos Emeralds

Five Chaos Emeralds are obtained by completing the five Special Stages. The sixth is held by Dr. Robotnik and is awarded after the final boss encounter if Sonic has already collected the other five.

Collecting the complete set unlocks Sonic's good ending. If the player defeats Robotnik without first obtaining the five Special Stage Emeralds, the ending is different.

Tails cannot enter the Special Stages. Collecting 100 Rings as Tails awards an extra life instead, and his campaign does not follow the same Emerald collection requirements as Sonic's.

Game Gear and Master System Differences

Sonic Chaos was released on both Sega's Game Gear and Master System hardware in 1993. The two releases share the same main adventure, characters, and gameplay mechanics.

The Game Gear version uses a smaller screen area, which changes how much of a level is visible at once. Some stage details, graphics, and music also differ between the two versions.

Despite sharing much of their design, the two releases provide slightly different experiences because of the hardware and presentation differences.

Gameplay Tips

• Choose Sonic for Chaos Emeralds: Only Sonic can access the Special Stages needed to collect the first five Emeralds.
• Save Rings for Special Stages: Reach 100 Rings during Act 1 or Act 2 to enter a Special Stage automatically.
• Use Tails to explore: His temporary flight makes some elevated platforms and wide gaps easier to navigate.
• Practice the standing dash: Sonic's Strike Dash provides an additional way to build speed from a stationary position.
• Watch the Special Stage timer: You have roughly one minute to reach each Emerald, so prioritize the route toward the objective.
• Collect all five Special Stage Emeralds: Defeating Robotnik afterward provides the sixth Emerald and Sonic's good ending.