MeltyLancer is a life simulation game similar to -- and by the same designers as -- Graduation, in which the player is tasked with training a squad of six young Tokyo Eastern Metro Police recruits, called Lancers. The main core of the game is determining each Lancer's weekly schedule: which days are they on patrol, which days on standby, and which days do they have off? After the general schedule is determined, the player meets with each Lancer to speak with them directly, determining specific actions they'll take that week; whether they spend a day training, exercising, or getting some much-needed rest will affect their stats and ability to complete missions. While on patrol or on special missions, battles may occur, which can be partially controlled with a handful of commands but mostly play out automatically. Each of the six Lancers has their own abilities, personalities, and specialties.

A mini-CD containing the game's theme song is also included in the package.

It is the year 2086. Earth has finally joined the Galactic Union; people, knowledge, and technology can now freely travel to and from Earth. New technology is solving many of humanity's problems, such as disease and food shortage, and galactic tourism is quickly becoming a boon for Earth's economy. However, not all changes are positive: with its borders open, Earth is no longer considered a protected location by the Galactic Union, and not everyone who might come to the planet is there just to see the sights. The Galaxy Police are dedicated to fighting interplanetary crime, and while they may provide the tools, Earth itself must provide the talent, and those recruits are going to need some training to keep the peace.