Little Planet

A floating world chained by Robotnik, freed only by time travel and seven stones.

Little Planet is an extraterrestrial body that appears at Never Lake for exactly one month each year. Doctor Robotnik chained this floating world to a mountain and began transforming it into a giant fortress using seven magical Time Stones. Sonic the Hedgehog ventured to the planet to stop him, accompanied by Amy Rose, his self-proclaimed girlfriend who followed him besottedly. This unique celestial body serves as the primary stage for the game Sonic CD, where players must navigate themed levels across different time periods to protect it from conquest.

Quick Facts

First appearance: Sonic CD (1993)

Lore & Background

Little Planet is not a permanent fixture of Sonic's world; instead, it materializes at Never Lake annually for just one month. Doctor Robotnik exploits this window to chain the planet to a mountain, utilizing his robot army to convert it into a fortress. The conflict centers on seven Time Stones hidden within the different zones, which control the flow of time and are essential to Robotnik's plan. Sonic arrives to dismantle this scheme, pursued by Amy Rose. The narrative introduces two key figures: Metal Sonic, dispatched to kidnap Amy at Collision Chaos, and Amy herself, who becomes a central plot point after being rescued. The planet's fate hinges on the player's actions; if all zones are converted to "good futures" or all Time Stones collected, Little Planet departs Never Lake with a shower of stars. If not, Robotnik uses the stones to drag it back, forcing a replay.

Reader's Guide

Little Planet consists of seven levels, each split into three zones. The first two zones begin in the present, while the third is always set in the future. Players control Sonic, who can perform a "spin dash" and a "super peel-out" to increase speed. The core mechanic involves hitting signs labeled "past" or "future" to travel through time without losing momentum. This alters the stage layout, music, and graphics. Future stages default to "bad futures," littered with machinery after Robotnik's conquest. To create a "good future," players must visit the past version of each zone and destroy a hidden transporter where enemy robots spawn. Achieving this in every zone unlocks the best ending. Collecting more than 50 rings at the end of a level grants access to a special stage, a pseudo-3D environment where Sonic must destroy six UFOs within a time limit to earn a Time Stone. Collecting all seven stones automatically creates good futures everywhere.

Did You Know?

The game introduces two iconic characters: Amy Rose, designed by Naoto Ohshima, and Metal Sonic, designed by Kazuyuki Hoshino.
The soundtrack features house and techno influences composed by Naofumi Hataya and Masafumi Ogata for the Japanese version.

Gameplay Mechanics and Time Travel

The gameplay distinguishes itself through a unique time travel mechanic allowing access to past, present, and future versions of stages. Players hit signs labeled "past" or "future" while maintaining speed. Default future zones are "bad futures," filled with machinery and enemies. Converting them to "good futures" requires traveling to the past and destroying hidden transporters. Each level has three zones; the third always ends in a boss fight against Robotnik. Players start with three lives, lost if damaged without rings. Finishing a level with over 50 rings unlocks a special stage where Sonic destroys six UFOs in a pseudo-3D environment to collect Time Stones.

Narrative Arc and Character Introductions

Set at Never Lake, the story features Little Planet appearing annually before being chained by Doctor Robotnik. Sonic is joined by Amy Rose, introduced as his self-proclaimed girlfriend who follows him besottedly. The plot escalates when Robotnik deploys Metal Sonic to kidnap Amy at Collision Chaos. After saving her and defeating Metal Sonic in Stardust Speedway, Sonic confronts Robotnik in Metallic Madness. Two endings exist: a good ending where Little Planet leaves with a star shower, and a bad ending where Robotnik drags it back.

Development Origins and Technical Ambition

Initially conceived as an enhanced port of the 1991 Genesis game, Sonic CD evolved into a separate project under director Naoto Ohshima. The team aimed to showcase Sega CD capabilities with animated cutscenes by Studio Junio and Toei Animation, and CD-quality music composed by Naofumi Hataya and Masafumi Ogata in Japan, and Spencer Nilsen, David Young, and Sterling Crew for North America. The game data totaled 21 MB, utilizing the "Sega Digitizer MK-III" system for graphics.

Commercial Success and Lasting Legacy

Released in late 1993, Sonic CD received acclaim for its size, music, and time travel feature, selling over 1.5 million copies to become the best-selling Sega CD game. It was ported to Windows in 1996 and included in Sonic Gems Collection (PS2/GameCube) in 2005. A remake by Christian Whitehead using the Retro Engine launched in 2011, later appearing in Sonic Origins in 2022.