Video Game / Sonic Pocket Adventure
aka: Sonic The Hedgehog Pocket Adventure

A side-scrolling Sonic the Hedgehog platformer for SNK's NeoGeo Pocket Color, released late 1999-early 2000. The level art and setpieces are mostly based on the Genesis version of Sonic the Hedgehog 2, while the music is primarily taken from Sonic the Hedgehog 3 and Sonic & Knuckles.

It was developed by Dimps, who would go on to develop other games starring Sega's prickly little mascot, such as the Advance trilogy, the Rush titles, the Wii/PS2 versions of Sonic Unleashed, Sonic the Hedgehog 4, the DS version of Sonic Colors and the 3DS version of Sonic Generations.

This video game provides examples of:

  • Airborne Aircraft Carrier: Aerobase Zone.
  • Alliterative Name: Cosmic Casino.
  • Art Shift: In Gigantic Angel Zone, Dr. Robotnik starts using his modern clothing. When he starts the battle in his machine, he's suddenly in his classic clothes again, but then he runs off in his modern clothing once the battle is over.
  • Bonus Level: Special Stage.
  • Casino Park: Cosmic Casino Zone.
  • Dub Name Change: The Big Bad is known here as Dr. Robotnik he had been in western releases of the classic series up to that point; however, this would be the very last game to do so, as later games and re-releases would enforce Dr. Eggman.note 
  • Eternal Engine: Secret Plant Zone and Gigantic Angel Zone.
  • Green Hill Zone: Neo South Island Zone.
  • Guide Dang It: There are only six Special Stages in the game and seven Chaos Emeralds, so only the first six can be obtained during normal play. The seventh Emerald (the one that Dr. Robotnik stole from Knuckles in Aquatic Relix Zone) is used by Dr. Robotnik in the Last Utopia Zone boss battle. However, you can jump on the Emerald during the fight and after hitting it enough times it will drop and you can collect it. The game doesn't tell you this. This is necessary to access Chaotic Space Zone.
  • Let's You and Him Fight: Seems Knuckles won't give Sonic his Chaos Emerald without having a little brawl first...
  • Megaton Punch: How Knuckles sends Sonic to Sky Chase Zone.
  • Nostalgia Level: This game is made entirely of Nostalgia Levels. Particularly interesting in this regard are Neo South Island Zone and Gigantic Angel Zone, which are pretending to be different Nostalgia Levels—Neo South Island is Emerald Hill disguised as Green Hill, and Gigantic Angel is Metropolis dressed up to resemble Scrap Brain.
  • Pinball Zone: Cosmic Casino Zone.
  • Recurring Boss: Some other boss concepts are also reused in the Advance series (including an early version of the Egg Hammer Tank), not to mention that you'll fight Knuckles and Robo Sonic during the game.
  • Soundtrack Dissonance: The musical choices start to get a little off in terms of appropriateness following Cosmic Casino Zone, such as placing the jumpy Mushroom Hill BGM (Act 1 to be precise) from S&K in act 1 of Aquatic Relix, which is modeled after the not so jumpy Aquatic Ruin Zone from Sonic 2. The most egregious instance of this trope, however, must go to the final boss battle, where the tranquil Sky Sanctuary BGM (also from S&K) makes the epic showdown with Dr. Robotnik a little less epic (unlike the rest of the game, which takes inspiration from Sonic 2, the final boss is a spin on The Doomsday Zone from S&K and Sky Sanctuary's theme is not what one would expect for a final struggle above the Earth's atmosphere).
  • Space Zone: Last Utopia Zone and Chaotic Space Zone.
  • Super Title 64 Advance: One of a number of games for this system with the word "Pocket" in the title.
  • Underwater Ruins: Aquatic Relix Zone.
  • Villains Want Mercy: Dr. Robotnik in the normal ending. Sonic then crushes his Egg Mobile.

Alternative Title(s): Sonic The Hedgehog Pocket Adventure