3D gameFirst-person stealth-escape horror gameOriginal by DVloper
Granny delivers the tension of escaping a locked house within a limited number of days, while hiding from an enemy who hears every sound, in a remarkably lean mobile package. A plate hitting the floor, a creaking door and then approaching footsteps send the player's heart racing. Collecting keys, tools and codes to work out an escape route turns fear into a puzzle experience, which also makes it ideal for content creators and videos.
A game like this does not need a big map; the main investment goes into enemy AI and sound design. Sound-aware patrol, search and chase behaviour, hiding spots, randomly placed items and multiple escape routes provide replayability. Lighting that carries the atmosphere, jumpscare timing and the balance with mobile performance are equally critical.
Why Granny works: the core loop
Systems you need to build a game like Granny
Sound-aware enemy AI
A behaviour tree of patrol, suspicion, moving to the sound source, search and chase states. Every noise the player makes is processed as an event.
Hiding and vision system
Hiding spots such as under beds, in wardrobes and behind doors; detection chance based on the enemy's view cone and light level.
Items and escape puzzles
Multiple escape routes unlocked with keys, tools, combination codes and collected parts. Randomising item placement each run adds replayability.
Days, difficulty and penalties
Losing a day when caught, with enemy speed and sensitivity set by difficulty. Limited attempts keep the tension alive.
Sound design and atmosphere
3D positional audio, enemy footsteps, dynamically rising tension music and carefully timed jumpscares.
House map and lighting
A tightly designed location with several floors and secret passages. On mobile, baked lighting and fog create the dark atmosphere.
What goes into the first version, what comes later
First version (soft launch)
- One house map with several floors and hiding spots
- A single enemy AI that reacts to sound and sight
- Random item placement and two escape routes
- Difficulty levels and a day / attempt system
- Sound design, rewarded ads for extra attempts and analytics
Later updates
- A second enemy and new map sections
- New escape routes and secret endings
- Co-op mode (escape together with a friend)
- PC version and advanced graphics settings
The hard parts of this genre
AI that is fair but scary
If the enemy is too smart the game feels punishing; too dumb and it is not scary. The consequences of a player's mistake should be predictable yet tense.
Dark atmosphere on mobile
Dark scenes can become unreadable on low-brightness screens. Light, fog and contrast need careful tuning across devices.
Replayability
Single-map horror games wear out quickly once solved. Random item placement, difficulty modes and secret endings extend their life.
Team, timeline and budget
The estimate is based on the genre’s core systems, content volume, multiplayer and live-ops needs plus QA and project management: about 244 person-days for the full scope and 110 person-days for the first version. Cutting scope (fewer levels, one map, fewer characters) lowers the budget directly. Store accounts, servers, audio licences and user-acquisition budget are separate items. We send a fixed written price within 24 hours after the game design document.
Monetisation
The common model for mobile horror is free download plus ads: rewarded ads for an extra day or attempt when caught, interstitials between rounds and a paid ad-free version. On PC, a low-priced one-off purchase is preferred. Visibility in videos and streams is the strongest source of free marketing in this genre.
Estimate your game budget and get a fixed quote
Let us scope it together and send a fixed written quote within 24 hours. NDA on request; you own the source code.
Calculated instantly from your choices, excl. VAT. A fixed written quote follows a free scoping call within 24 hours.
Choosing a game development company for a game like Granny
Most people searching “make a game like granny” are really looking for a reliable game development company. When comparing quotes, check four things:
- Can you play their released 3D games on your own phone?
- Are the source code, art files and store accounts transferred to you by contract?
- Do they build a playable prototype first and show a demo every two weeks?
- Are ads, in-app purchases and analytics set up as part of the quote?
Copyright and originality
Game mechanics on their own are generally not protected, but names, logos, characters, art, audio and level designs are. That is why we build a game “like Granny” with your own name, art and world. This is not legal advice; we recommend a trademark search before launch.
Frequently asked questions
How long does it take to make a game like Granny?
A horror game with one location and one enemy can be built by a small team in a relatively short time. What stretches the schedule is repeatedly testing AI balance and scare moments.
Will there be copyright issues?
The mechanic of escaping a house by hiding is generally free to use. Do not copy the character design, name, house layout or sound effects; you need an original enemy and story. This is not legal advice.
Which engine suits a horror game?
For mobile-first projects, Unity is practical with NavMesh and ready-made AI tools. If you are targeting high visual quality on PC, Unreal Engine 5 is also a strong option.
What should I look for in a horror game development company?
Look for a team experienced in sound design and enemy AI. Testing whether an early prototype actually scares you is worth more than any document.
