Endless Nightmare 4: Prison Mod APK 1.1.1 [MOD Menu][God Mode][Dumb Enemy]

Endless Nightmare 4: Prison is the fourth installment in the popular horror game series developed by 707 INTERACTIVE, taking players on a terrifying journey through a ghost-infested penitentiary. Released as a follow-up to the successful previous chapters set in a home, hospital, and shrine, this latest addition continues the tradition of combining atmospheric horror exploration with puzzle-solving and strategic combat. As someone who’s spent countless hours navigating the dark corridors of this frightening facility, I’m excited to share comprehensive insights to help you survive this chilling adventure and uncover all its secrets.

What Is Endless Nightmare 4: Prison?

Endless Nightmare 4: Prison is a first-person survival horror game set in a haunted prison overrun with ghosts and monsters. The game follows Scott Boyd, a former US Marine Corps sergeant, whose life spirals into tragedy after returning from service. Through a series of devastating personal losses—including the death of his wife and son during a pandemic and his brother’s suicide—Scott finds himself on death row for killing police officers. Just as he’s about to be executed by electric chair, something mysterious happens, and he finds himself alone in the prison, beginning his desperate fight for survival and redemption.

How does the gameplay work?

Core mechanics and exploration elements

The horror gameplay in Endless Nightmare 4 combines exploration, puzzle-solving, and resource management. You’ll need to carefully navigate the prison environment, searching rooms for useful items while avoiding or confronting the paranormal entities that roam the halls. The movement controls utilize a virtual joystick for your left thumb to navigate and the right side of the screen to look around—a standard but effective setup for mobile horror games.

What makes the exploration particularly challenging is the deliberate movement speed, which some players find frustratingly slow. However, I’ve found this actually enhances the tension when a ghost suddenly appears around a corner. The atmospheric horror is further amplified when playing with headphones, which I highly recommend for immersing yourself in the chilling sound design.

Combat and stealth systems

The survival mechanics offer players multiple approaches to dealing with threats. You can:

• Hide in cabinets to avoid detection
• Sneak past enemies using the crouch function
• Engage in direct combat using various weapons
• Utilize the environment to create distractions

I’ve found the stealth approach most effective in the early game when resources are scarce. The hiding system works particularly well when you’ve alerted a ghost—quickly ducking into a cabinet can save your life, but timing is critical as monsters will check nearby hiding spots if they saw you enter.

Who developed the game and what makes it unique?

About 707 INTERACTIVE and their horror game approach

707 INTERACTIVE: Fun Epic Casual Games is the development studio behind the Endless Nightmare series. Based in Hong Kong, they’ve focused on creating mobile horror experiences that rival console games in atmosphere, if not in scope. Their approach balances jumpscares with psychological horror and puzzle elements, creating a more varied experience than simple “haunted house” mobile games.

The development team actively seeks community feedback through their Facebook page and Discord server, with regular updates addressing player concerns—a commendable practice I’ve noticed over the past two years following the game.

Connection to the Endless Nightmare series

While Endless Nightmare 4: Prison is part of an established series, it tells a completely independent story. This approach makes it accessible to newcomers while still offering familiar gameplay mechanics to series veterans. Each game in the series explores different horror settings (home, hospital, shrine, and now prison), but maintains consistent core gameplay elements like puzzle-solving, exploration, and combat.

What distinguishes this fourth installment is its more grounded, reality-based story approaching themes of grief, despair, and redemption—adding emotional depth to the horror experience.

Key Features That Make Endless Nightmare 4: Prison Stand Out

After exploring every dark corner of this game, I’ve identified several standout features that make Endless Nightmare 4: Prison a compelling horror experience for mobile gamers in 2025.

What are the main gameplay elements players love?

Atmosphere and sound design

The game’s exquisite 3D art style delivers a realistic horror visual experience that’s impressive for a mobile title. The prison environment is meticulously detailed with peeling paint, rusted metal, and abandoned personal effects that tell silent stories about the facility’s former inhabitants.

However, it’s the sound design that truly elevates the horror atmosphere. The game uses audio cues masterfully to build tension—distant footsteps, rattling chains, and whispered voices create a sense of dread even when no enemies are visible. Playing with headphones transforms the experience entirely, making those sudden ghost appearances genuinely startling. I still remember nearly dropping my phone when a spectral prisoner appeared behind me while I was examining a newspaper clipping.

Puzzle-solving and exploration

The puzzle mechanics in Endless Nightmare 4 strike a good balance between challenge and accessibility. You’ll need to:

• Find keys and unlock various doors
• Collect items that combine to solve environmental puzzles
• Discover notes and newspaper clippings that reveal the story
• Locate hidden resources necessary for survival

What makes the exploration rewarding is how the game gradually opens up new areas as you solve puzzles, creating a satisfying sense of progression. Finding a key card after a particularly challenging ghost encounter feels genuinely rewarding, especially when it grants access to a previously inaccessible wing of the prison.

What weapons and upgrade systems are available?

Weapon types and combat strategies

The combat system provides multiple options for dealing with enemies. Available weapons include:

• Hammer (melee weapon for close encounters)
• Pistol (balanced option with moderate damage)
• Shotgun (powerful but limited range and ammo)
• Rifle (accurate with good damage at longer distances)

Each weapon has distinct advantages in different situations. I’ve found the shotgun particularly effective against stronger enemies at close range, while the pistol is better for conserving ammunition against standard ghosts. The weapon selection adds strategic depth to encounters, as you must decide whether to engage or avoid enemies based on your current loadout.

Upgrade paths and resource management

The upgrade system is one of the game’s more compelling features. Weapons can be enhanced by collecting parts and alloys found throughout the prison, improving damage, reload speed, and magazine capacity. This progression system provides a satisfying power curve as you advance through the game.

Resource management is equally important. Medical syringes for healing, lockpicks for shortcuts, and ammunition are all limited, creating tension during exploration. One particularly tense moment from my playthrough involved being caught with only two shotgun shells remaining as three ghosts patrolled the cafeteria I needed to cross—forcing me to use stealth and distraction instead of direct confrontation.

Expert Tips and Strategies for Endless Nightmare 4: Prison

After completing multiple playthroughs, I’ve developed several strategies that can significantly improve your chances of survival in this challenging horror adventure.

How to survive longer in the game?

Resource gathering and management techniques

Efficient resource management is crucial for survival. Based on my experience, I recommend:

• Thoroughly search each room before proceeding—resources are often hidden in drawers, lockers, or behind objects
• Prioritize ammunition conservation by using stealth whenever possible
• Save healing items for critical situations rather than using them after minor damage
• Focus on upgrading one primary weapon first rather than spreading resources across multiple guns
• Complete daily tasks and achievements for bonus resources

A particularly effective technique I’ve discovered is “room clearing”—systematically eliminating ghosts in an area before thorough exploration, allowing you to search without constant threat.

Effective stealth and combat tactics

Mastering both stealth and combat improves your chances of survival:

• Use crouch walking to reduce noise when ghosts are nearby
• Listen carefully for audio cues that signal enemy presence
• When combat is unavoidable, aim for headshots to maximize damage
• Use doorways and furniture as barriers during fights
• After firing, change position immediately as ghosts will investigate the noise

One tactic that saved me repeatedly was the “peek and retreat” method—opening a door slightly to draw out a ghost, then hiding in a nearby cabinet to ambush it when it investigates.

How to unlock all endings?

Decision points and hidden requirements

Endless Nightmare 4: Prison features multiple endings based on decisions and actions throughout the game. Without spoiling the story, key factors influencing your ending include:

• How you interact with specific NPCs
• Whether you find certain hidden documents
• Your approach to key moral choices in the story
• Completion of optional side objectives

The most satisfying ending requires finding all story-related documents, which provide context for Scott’s situation and the prison’s history with the paranormal.

Achievement hunting guide

Completing achievements not only provides satisfaction but also rewards you with useful resources. Focus on these achievements early:

• “Break Time” (destroying 10 bottles)
• “Law Enforcer” (defeating 5 enemies with assassination)
• “Pistol Expert” (getting 10 pistol kills)
• “Sharpshooter” (achieving 10 headshots)

APKFlex.com users have reported that focusing on these achievements early provides resources that make the mid-game significantly easier by allowing earlier weapon upgrades.

Installing and Playing Endless Nightmare 4: Prison in 2025

How to download and set up the game?

Mobile installation guide (Android and iOS)

Installing Endless Nightmare 4: Prison on mobile devices is straightforward:

For Android:

• Open Google Play Store
• Search for “Endless Nightmare 4: Prison”
• Tap Install (requires Android 7.0 or higher)
• Allow approximately 800MB of storage space
• Follow the initial setup instructions

For iOS:

• Open Apple App Store
• Search for “Endless Nightmare 4: Prison”
• Tap Get (requires iOS 11.0 or higher)
• Allow approximately 800MB of storage space
• Complete the initial setup

The game is free to download but contains ads and optional in-app purchases that can enhance the experience by reducing grinding for resources.

Playing on PC with emulators

For a larger-screen experience with better controls, you can play on PC using an Android emulator. According to LDPlayer’s website, these are the steps:

1. Download and install LDPlayer on your computer
2. Open Play Store within LDPlayer and sign in to your Google account
3. Search for “Endless Nightmare 4: Prison” and install
4. Once installation completes, click the game icon on the home screen

APKFlex.com recommends using keyboard mapping features in emulators to improve control precision, which is particularly helpful during tense combat encounters. The enhanced graphics capabilities of PCs also bring out the detailed environments more vividly than most mobile devices.

Technical requirements and performance tips

Optimizing the game on different devices

To ensure smooth performance:

• Close background apps before playing
• Enable battery optimization exceptions for the game
• Adjust graphics settings based on your device capabilities
• Consider reducing other visual effects if experiencing lag

On mid-range devices, lowering shadow quality and draw distance can significantly improve frame rates without substantially affecting the visual experience.

Troubleshooting common issues

Based on user reviews and my experience, common issues include:

• Sound disappearing after ads (solution: restart the game)
• Slow movement speed (intentional design choice, not a bug)
• Game crashes (solution: ensure your device meets minimum requirements)
• Progress loss (solution: connect to Facebook or create an account for cloud saves)

The developers regularly update the game to address technical issues, with the most recent update focusing on optimizing game content for better performance.

Conclusion

Endless Nightmare 4: Prison delivers a compelling horror adventure that stands out in the mobile gaming landscape. While not without flaws—particularly its ad implementation and occasionally frustrating movement speed—the game offers an impressive atmosphere, engaging gameplay loop, and genuinely frightening moments that horror fans will appreciate.

The combination of exploration, puzzle-solving, and combat creates a varied experience that keeps players engaged throughout multiple playthroughs. The multiple endings provide incentive to replay and explore different approaches to situations, adding substantial value to this free-to-play title.

Whether you’re a longtime fan of the Endless Nightmare series or new to mobile horror games, this fourth installment offers a genuinely unsettling experience that will keep you on edge as you help Scott escape his prison nightmare and seek redemption.

Frequently Asked Questions

Is Endless Nightmare 4: Prison free to play?

Yes, Endless Nightmare 4: Prison is free to download and play on both Android and iOS. However, the game contains advertisements and optional in-app purchases. Many players note that ads appear frequently, particularly when obtaining resources like ammunition. You can watch these ads for rewards or make purchases to reduce their frequency.

How large is the download size for Endless Nightmare 4: Prison?

The download size for Endless Nightmare 4: Prison is approximately 800MB after full installation. The initial APK download is smaller, but you’ll need additional space for the complete game data. Make sure you have at least 1GB of free space on your device before installing to accommodate the game and any future updates.

Can I play Endless Nightmare 4: Prison offline?

Yes, Endless Nightmare 4: Prison can be played offline once downloaded. This makes it an excellent option for gaming while traveling or in areas with limited internet connectivity. However, you’ll need an internet connection for the initial download, to view ads for rewards, and to access any online features or updates.

Are there different difficulty levels in the game?

Yes, Endless Nightmare 4: Prison offers multiple difficulty modes that affect enemy strength, resource availability, and puzzle complexity. Each difficulty level can lead to different endings, encouraging multiple playthroughs. Beginners should start on the normal difficulty to get accustomed to the game mechanics before attempting higher difficulty settings.

How do I contact the developers for support?

You can contact 707 INTERACTIVE for support through their official channels. Their support email is [email protected]. Additionally, they maintain an active presence on Facebook (EndlessNightmareGame) and Discord (discord.gg/ub5fpAA7kz) where they regularly interact with the community and address player concerns and technical issues.