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Sonic the Hedgehog is an educational video game developed by Realtime Associates and released by LeapFrog Enterprises in 2008. It was a launch title for the LeapFrog Didj learning system.

Gameplay

The title screen of Sonic the Hedgehog.

Sonic the Hedgehog is a 2D side-scroller platforming video game, which plays similar to past 2D Sonic games. The player takes control of Sonic the Hedgehog, who can run and jump as his most basic abilities. The game is divided into four Zones, each with two Acts, with a boss fight at the end of the second one.

As with past Sonic games, Rings are scattered across the Acts. Rings work as the player's method of protection; if the player is hit while having at least one Ring, they will survive at the cost of losing all Rings, though they will be given a short amount of time to collect them. However, if the playable character gets hurt without having any Rings on them, they will lose a life, or get a Game Over if they run out of lives.

Controls

Button formation Character movement
Controlpadds.png left/right Run
Controlpadds.png up Look up
Controlpadds.png down Duck
A Jump
Controlpadds.png left/right + Controlpadds.png down Roll
Controlpadds.png down + A Spin Dash
Hint Play a Curricular Gadget tutorial
Pause Pause the game

Objects

Items

Gimmicks and obstacles

Characters

Playable characters

Non-playable characters

Enemies

Bosses

  1. Drill Eggman (Grass Hill Zone)
  2. Graviton Mobile (Hydropolis Zone)
  3. Water Eggman (Scrap Plant Zone)
  4. Eggman Mech (Space Egg Zone)

Levels

  1. Grass Hill Zone
  2. Hydropolis Zone
  3. Scrap Plant Zone
  4. Space Egg Zone

Curricular Gadgets

Main article: Curricular Gadget

Curricular Gadgets are minigames that are activated by running through Teleport Rings, with a different amount in each level. All of them involve collecting all the right letters to spell or complete a word.

Badges and Bitz

During the game, the player will be able to earn various achievements called Badges, which are part of the Didj reward system. each Badge will award the player with a certain amount of points called Bitz, depending on the value of the achievement.

Badges are displayed on the player’s Achievement Screen from the game's menu and are stored (alongside the Bitz) on the LeapFrog website.

Bitz are used as currency on the LeapFrog website and can be spent in order to download additional content for this game, as well as other titles on the Didj.

List of Badges

Badge Achievement Event Amount of Bitz Earned
Complete Zone 1, Act 1 in less than 3 minutes 5
Complete Zone 1, Act 2 in less than 3 minutes 5
Complete Zone 2, Act 1 in less than 3 minutes 5
Complete Zone 2, Act 2 in less than 3 minutes 5
Complete Zone 3, Act 1 in less than 3 minutes 5
Complete Zone 3, Act 2 in less than 3 minutes 5
Complete Zone 1, Act 1 in less than 2 minutes 10
Complete Zone 1, Act 2 in less than 2 minutes 10
Complete Zone 2, Act 1 in less than 2 minutes 10
Complete Zone 2, Act 2 in less than 2 minutes 10
Complete Zone 3, Act 1 in less than 2 minutes 10
Complete Zone 3, Act 2 in less than 2 minutes 10
Collect 100 Rings in Zone 1, Act 1 5
Collect 100 Rings in Zone 1, Act 2 5
Collect 100 Rings in Zone 2, Act 1 5
Collect 100 Rings in Zone 2, Act 2 5
Collect 100 Rings in Zone 3, Act 1 5
Collect 100 Rings in Zone 3, Act 2 5
Collect 200 Rings in Zone 1, Act 1 10
Collect 200 Rings in Zone 1, Act 2 10
Collect 200 Rings in Zone 2, Act 1 10
Collect 200 Rings in Zone 2, Act 2 10
Collect 200 Rings in Zone 3, Act 1 10
Collect 200 Rings in Zone 3, Act 2 10
Collect the Green Emerald 20
Collect the Yellow Emerald 20
Collect the Purple Emerald 20
Collect the Master Emerald 20
Get 5 Gadget Questions correct in a row 20
Get 10 Gadget Questions correct in a row 20
Find all Gadgets in Zone 1, Act 1 25
Find all Gadgets in Zone 1, Act 2 25
Find all Gadgets in Zone 2, Act 1 25
Find all Gadgets in Zone 2, Act 2 25
Find all Gadgets in Zone 3, Act 1 25
Find all Gadgets in Zone 3, Act 2 25
Find every Gadget in the game 50

List of Prizes

Because the Didj website has shut down, the full list of prizes is not confirmed, but according to the game's files the following prizes were planned:

Music

  • Grass Hill (Remix)
  • Hydropolis Zone (Remix)
  • Scrap Plant (Remix)

Animal friends

Idle animations

  • News pose (reading a newspaper)
  • In-the-shade pose (underneath an umbrella)
  • Yo-yo Pose (playing with a yo-yo)

Victory animations

  • Backflipping
  • Breakdancing
  • Moonwalking

Trivia

  • The game was developed by Realtime Associates, in which they previously made games for the Sega Mega Drive, the Sega Pico, and the Sega Saturn, with Sonic making a brief appearance in Realtime's Bug! for the Saturn.
  • The game's logo is derived from the logo for Sonic the Hedgehog (2006).
  • This marks the second Sonic game on a LeapFrog learning system, the first being Sonic X. Both games were made by the same developer, but Sonic X focused on mathematics while this game focused on spelling.
  • The game uses the sprites of Sonic from Sonic the Hedgehog 3 & Knuckles, although his color palette is from Sonic the Hedgehog Spinball.
  • Despite the name, Green Hill Zone actually uses textures from Emerald Hill Zone.
  • All the music from this game are remixes of music from older games:
    • The title music, as well as the theme for Grass Hill (which is Green Hill Zone and Emerald Hill Zone), is the theme for Mushroom Hill Zone, Act 1 from Sonic & Knuckles.
      • A sped-up version is used when Sonic collects the Power Sneakers in any stage.
      • Another remix was also available for download.
      • The real title music is in the game's files, and is the same title music from Sonic & Knuckles.
    • The theme for the main menu and the credits is the same music used for the ending theme of Sonic 3D Blast on the Sega Genesis.
    • The theme for Hydropolis (which is Sandopolis Zone and Hydrocity Zone) is the theme for Sandopolis Zone, Act 1 from Sonic & Knuckles.
      • Another remix was also available for download.
    • The theme for Scrap Plant (which is Scrap Brain Zone and Chemical Plant Zone) is the theme for Flying Battery Zone, Act 1 from Sonic & Knuckles.
      • Another remix was also available for download.
    • The invincibility theme is the same invincibility theme from Sonic & Knuckles.
    • The music for clearing a level is the same act clear music from Sonic the Hedgehog 3.
    • The Slot Machine music from Sonic & Knuckles can be heard during the Word Wheel minigame.
    • The Blue Sphere theme from Sonic the Hedgehog 3 can be heard during the cannon minigame.
    • The Act 1 mini-boss theme from Sonic & Knuckles can be heard in Egg Base Zone, as well as during a boss.
    • The Game Over theme from Sonic the Hedgehog 3 can be heard when the player loses all their lives.
    • A remix of the 1-up jingle from Sonic & Knuckles was in the game's files but was unused.
  • The title screen itself uses Sonic's sprite from the title screen of the original Sonic the Hedgehog, but the title screen in the Didj's main menu uses Sonic's sprite from the ending of said game.

Video

Sonic_The_Hedgehog_Didj_Commercial

Sonic The Hedgehog Didj Commercial


References

Sonic the Hedgehog handheld games
Sonic the Hedgehog spin-off games
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