Freedom Planet is a 2014 platform video game developed and published by GalaxyTrail. The player controls one of three anthropomorphic animal protagonists: the dragon girl Lilac, the wildcat Carol, or the basset hound Milla. Aided by a duck-like alien named Torque, the girls attempt to defeat the evil Lord Brevon, who plans to steal the Kingdom Stone and conquer the galaxy. While the game focuses on fast-paced platforming, its levels are interspersed with slower action scenes.

Game director Sabrina DiDuro (a.k.a. Strife) first began developing Freedom Planet as a Sonic the Hedgehog fangame using characters created by DeviantArt user Ziyo Ling for its main cast. Early into development, she lost interest in creating a derivative work and reconceived the project as her own intellectual property. Sash Lilac, originally a hedgehog, became a dragon; antagonist Doctor Eggman was replaced by Lord Brevon with his eyebrows resembling Doctor Eggman's mustache; and the Sonic series' ring-based health system was abandoned. Further changes were suggested by fans and incorporated throughout development. Freedom Planet was developed in Denmark and the United States, with its art direction carrying East Asian influences, such as medieval Chinese art inspiring its background visuals.

With development focused on the Windows platform, the game started out as a demo first released in August 2012 and was, after a successful Kickstarter campaign, released in its entirety via Steam in July 2014. Freedom Planet was later released for the Wii U in October 2015, for the PlayStation 4 in 2017, and for the Nintendo Switch in August 2018. The game received largely positive reviews; critics praised its gameplay, visuals, music, aesthetics, sense of humor and balance of Sonic elements with original content, but were mixed on its pacing, voice acting, story and the abundance of long cutscenes.

A sequel, Freedom Planet 2, was released in September 2022 for Windows. Ports for the Nintendo Switch, PlayStation 4, PlayStation 5, Xbox One and Xbox Series X/S, followed in April 2024.

Freedom Planet is a 2D platform game. The player directs one of three characters—Lilac, Carol, or Milla—to run and jump through levels and destroy robotic enemies. Levels contain obstacles such as corkscrews, loop-the-loops, hills, ramps, and rock walls. The player fights a miniboss in the middle of each level and a main boss at the end, after which the story is advanced by cutscenes. Because of its aesthetics, level design, and fast-paced gameplay, Freedom Planet has been compared to the Sonic the Hedgehog games released for the Sega Genesis in the early 1990s.

Unlike in Sonic, the player character has a hit point meter instead of a ring-based health system. To refill this meter, the player collects red leaves dropped by enemies and scattered throughout levels. Lilac's and Carol's maximum health are seven leaves, Milla's is four. Being hit by enemies' and bosses' attacks reduces the character's health, and a life is deducted when no health remains. If all lives are lost, a game over screen appears, but the player may freely restart from the last checkpoint. Extra lives can be found within levels, as can shield and invincibility-type power-ups.

Each of the playable characters make use of an "attack" and "special" button. Lilac and Carol both make use of an energy gauge on the heads-up display, which recharges on its own and limits the use of their special moves. The gauge can be recharged quicker by collecting crystals and keystones.

Lilac's basic attacks consist of strong but sluggish hair whips, an uppercut into the air, a crouching kick, and a dive kick from midair. The Dragon Cyclone, used by pressing jump midair, lets Lilac spin like a spinning top and deal touch damage, but also acts as a double jump with reduced gravity. Pressing the special button with a full energy gauge activates the Dragon Boost, an eight-directional air dash that deals heavy touch damage and makes her temporarily invincible.