Who exactly are all apartment residents Mousebusters? The haunted complex at the center of Odencat’s beloved pixel-art adventure houses five quirky main tenants: a shopaholic teen in Room 101, an overworked programmer in Room 102, a struggling musician in Room 103, a sound-sensitive tenant in Room 201, and an obsessive photographer in Room 202. To break your rodent curse, you must exterminate the inner demons feeding on their negative emotions.
Most wikis and forum threads barely scratch the surface of this heartwarming, spooky narrative. They list the room numbers but fail to explore the deep psychological ties between the tenants and the ghosts that haunt them. If you want to understand the true emotional core of the game—and exactly how to defeat the spirits plaguing the building—you need to look closer.
This definitive guide breaks down every tenant, the environmental clues hidden in their rooms, and the specific spectral bosses you will face in the Exciting Exorcism Battles (EEB).
The Core Premise: Why We Bust Ghosts
The setup of Mousebusters is a sharp left turn into supernatural horror comedy. You play as a human who, upon moving into a new apartment building, is mysteriously transformed into a tiny mouse. You quickly team up with a veteran rodent who speaks in a gruff Kansai dialect and demands you call him "Chief" (or "Master" in some translations).
Chief explains the rules of your new reality: the building is crawling with evil spirits. These ghosts are not your standard haunted-house poltergeists; they are manifestations of the tenants' deepest insecurities, anxieties, and traumas. Because the ghosts feed on negative emotions, a direct attack won't work. You must first investigate the rooms from a mouse's perspective—scurrying under beds, climbing shelves, and observing the humans in their most vulnerable moments.
Only by understanding the root cause of a resident's pain can you force the ghost to reveal itself. Once the spirit is exposed, the game shifts into an "Exciting Exorcism Battle" where you use a specialized ray gun to target the ghost's spectral core while dodging its projectile attacks.
A Complete Roster of All Apartment Residents Mousebusters
The building functions as a multi-floor puzzle box. Each room tells a self-contained story about modern anxiety, beautifully rendered in Odencat's signature pixel art. Here is the complete breakdown of the tenants you must save.
Mousebusters in-game screenshot
Room 101: The Shopaholic Teen & The Window Wraith
The resident of Room 101 is a teenage girl who seems entirely consumed by her outward appearance. When you first infiltrate her apartment, you find her glued to her makeup table. The mouse protagonist notes that she can spend an hour applying cosmetics just to walk down to the local convenience store.
Her room is littered with shopping bags and beauty products, pointing to a deep-seated insecurity about how the world perceives her. This vanity and fear of judgment manifest as the "Window Wraith." The Wraith preys on her superficiality, turning her own reflection against her. To defeat the Window Wraith, you have to navigate the reflective surfaces of her room, proving that true self-worth isn't found in a mirror.
Room 102: The Overworked Programmer & The PC Poltergeist
Room 102 houses the quintessential burnt-out salaryman. He is a programmer who lives exclusively for his job, coming home only to immediately resume coding. His desk is a chaotic nest of cables, empty energy drink cans, and dual monitors. He survives on zero sleep and sheer caffeine-fueled momentum.
Mousebusters in-game screenshot
His crushing exhaustion summons the "PC Poltergeist." This ghost is a brilliant mechanical translation of burnout. The spirit hides within the computer screens, and only appears when the PC is active. During the exorcism battle, the PC Poltergeist aggressively darts between the dual monitors. You must carefully aim your ray gun at its weak point—a massive, glowing eye—without waking the sleeping programmer. It is a poignant commentary on how workaholism blinds us to our own deteriorating health.
Room 103: The Struggling Musician & The Rocker Revenant
Down the hall in Room 103 lives a passionate but deeply frustrated musician. His room is dominated by a guitar and a heavy amplifier. He is plagued by creative block and the terrifying realization that his dreams of rock stardom might be slipping away.
The ghost feeding on his feelings of inadequacy is the "Rocker Revenant." This spirit uses the sheer volume of the musician's amp against him, creating auditory chaos that prevents the resident from finding his true voice. Defeating the Rocker Revenant requires timing your shots to the rhythm of the spectral attacks, effectively silencing the noise of self-doubt so the musician can finally hear his own music again.
Room 201: The Sound-Sensitive Tenant & The Acoustic Apparition
Moving up to the second floor, Room 201 presents a different kind of auditory trauma. The tenant here is highly sensitive to noise and deeply isolated. Unlike the loud, chaotic energy of Room 103, this apartment is defined by its suffocating quiet, which is violently interrupted by the "Acoustic Apparition."
This ghost weaponizes the building's ambient sounds, turning the minor creaks and thuds of apartment living into a source of paranoia. The Acoustic Apparition feeds on the tenant's desire to withdraw from society. Exorcising this demon is about breaking the silence and reconnecting the resident with the outside world.
Room 202: The Obsessive Photographer & The Photo Phantom
The resident of Room 202 views the world entirely through a camera lens. While photography can be a beautiful art form, this tenant uses it as a shield. By constantly capturing moments, he avoids actually living in them. His room is a darkroom of developed photos and scattered camera gear.
His detachment summons the "Photo Phantom," a ghost that traps his memories in static frames. The Photo Phantom battle is visually striking, forcing you to dodge flashbulb-like attacks while targeting the spirit's core. Curing this tenant means teaching him to put the camera down and experience life directly.
The Darkside: How All Apartment Residents Mousebusters Face Their Past
Just when you think you have saved the building and can finally enjoy a rooftop BBQ with the newly freed tenants, the game pulls the rug out from under you. A mysterious portal opens, dragging the narrative into the "Darkside."
Mousebusters in-game screenshot
The Darkside is a twisted, nightmare reflection of the apartment complex. Here, you must revisit Darkside 101, Darkside 102, Darkside 103, Darkside 201, and Darkside 202. The ghosts you fight here are not just minor insecurities; they are the deeply entrenched, core traumas of the residents. The Window Wraith, PC Poltergeist, and Photo Phantom return with hyper-aggressive attack patterns.
This second half of the game elevates Mousebusters from a simple ghost-hunting romp into a profound exploration of mental health. It acknowledges that healing is not a one-time event. You don't just shoot a ghost once and cure a person's depression or anxiety forever. The Darkside represents the relapses and the hard work required to truly overcome one's inner demons.
Mousebusters in-game screenshot
Room 204 & The Chief's Final Message
The ultimate mystery of the building lies in Room 204. Throughout the game, Chief guides you from his makeshift headquarters, but his origins remain obscured. As you push deeper into the Darkside and collect hidden items, the truth about the building's curse is revealed.
Room 204 belonged to the previous owner of the apartment complex. The overarching curse that turned you into a mouse and attracted the spirits is tied directly to this room's tragic history. Setting the previous owner's soul to rest is the final, emotional crescendo of the game. Discovering Chief's final message requires finding every collectible and clearing every ghost battle on standard difficulty, rewarding dedicated players with a tear-jerking conclusion that perfectly caps off Odencat's storytelling.
FAQ: Saving All Apartment Residents Mousebusters
How long does it take to beat Mousebusters? A standard playthrough of the main story takes roughly 1.5 to 2 hours. However, if you want to unlock the extra story chapters, find all the hidden collectibles, and conquer the Darkside levels to see the true ending, expect to spend closer to 3 hours.
How do you trigger the Exciting Exorcism Battles? You cannot fight a ghost immediately. You must first explore the room in mouse form, interact with specific environmental clues (like the makeup table in Room 101 or the computer in Room 102), and wait for the resident to fall asleep or leave the room. Only then will the ghost expose its spectral core.
Who is the Chief in Mousebusters? Chief is your Kansai-dialect-speaking rodent mentor who provides you with your ray gun and tactical advice. Without spoiling the final twist, his true identity is deeply connected to the history of the apartment building and the soul trapped in Room 204.
Are there difficulty options for the ghost battles? Yes. While the game focuses heavily on narrative, the shooting mechanics can be challenging for casual players. The developer included difficulty options so that anyone can enjoy the story without getting permanently stuck on a boss fight.
A Tiny Hero With a Massive Heart
Mousebusters proves that you don't need cutting-edge 3D graphics to tell a gripping, emotionally resonant story. By shrinking the player down to the size of a mouse, the game forces us to look closely at the giant, looming anxieties that haunt everyday people. Whether it's the pressure to look perfect, the crushing weight of a deadline, or the fear of failure, the demons in this apartment building are universally relatable. Grab your ray gun, trust the Chief, and get to work—those ghosts aren't going to bust themselves.