Tonic Trouble

Tonic Trouble for Game Boy Color is a 2D platform adventure released in Europe in 2000. Developed by RFX Interactive and published by Ubi Soft, it adapts the characters and premise of the earlier Nintendo 64 and Windows game for Nintendo's color handheld. The starring role belongs to Ed, an extraterrestrial janitor whose accident sends a dangerous tonic down to Earth. Its mutating effects transform the planet, while the villainous Grögh gains power from the spilled substance. Ed is sent after the container to undo the damage and stop Grögh.

This Game Boy Color edition is built as a side-scrolling platformer rather than a miniature version of the original game's 3D adventure. Ed runs, jumps, ducks, swims and enters doors and portals while navigating hazards such as pits, lava, falling platforms, water, traps and hostile mutated creatures. The directional pad moves Ed and handles actions including looking, entering doors and diving, while the face buttons are used for jumping, conversation and the currently selected weapon. It is a single-player journey designed around handheld-sized action and exploration.

Progress depends on more than simply reaching an exit. The adventure begins with the rescue of the Doc, whose help is needed to reach Grögh's fortress. From there, Ed explores themed locations including Vegetable HQ, Glacier Cocktail, the Pyramid and the Cooking-Pot, gathering the parts and objects required for the next stage of the plan. Individual areas contain portals and collectible objectives, and cleared levels provide passwords that let players resume their progress later.

Ed gains useful tools as the campaign advances. A stick gives him an early means of fighting and activating objects, while a blowpipe adds a projectile option with limited ammunition. Thermometers increase his health capacity, and other pickups restore energy or add lives. Certain puzzles and encounters also use temporary transformations: popcorn machines can turn Ed into Super Ed for powerful close-range attacks, and the magic wand can disguise him as appropriate enemies to open new routes. These abilities are tied to the version's obstacle courses, switches and boss encounters rather than the gadgets of the console game.

The Game Boy Color Tonic Trouble is a compact conversion with six main levels, including a final trip to Grögh's Lair. Its presentation preserves the series' oddball science-fiction comedy and colorful mutated world while reorganizing the story into a distinct 2D campaign. The handheld release was not issued in North America, making it specifically a European entry in the short-lived Tonic Trouble series and a separate game from the better-known Nintendo 64 and PC versions.

It also includes one of Ubi Soft's early Ubi Key extras. After finding the Ubi Key in Vegetable HQ, players with two Game Boy Color systems and two copies of the game can use the hardware's infrared connection to unlock a secret level on the other cartridge. That link-based bonus, alongside the password system and collectible-driven stages, gives this version its own identity rather than treating it as a straight port of Ed's original adventure.