"I'll save the world of harem - Isekai Harem Saver -" is a novel game in which the protagonist "Daigo", saves the world of harem while encountering various incidents.
This Bishojo Game originally released under the "Genyukyo" brand has been reworked for the "CS Novels" platform for players of all ages worldwide to enjoy.

Camp Sunshine is a 16-bit blood-soaked Horror RPG that pits you as Jez, who is dropped off at Summer Camp. He awakes in the middle of the night to discover blood everywhere, a rampaging killer on the loose dressed in a mascot costume and himself involved in a deadly game of cat and mouse!

Into the Fray is a fast action-shooter in the vein of Doom and Dark Messiah; using fast combat, reactive environments, and traps. Blast, kick, and dash your way through Rebels and Eldritch creatures to liberate the Isle of Portland; as it becomes consumed by Fog and the horrors therein.

From the developers of POSTAL: Brain Damaged and ELDERBORN comes CROSSBOW: Bloodnight, a fast-paced single-player FPS arcade game with classic horror vibes. Master the occult powers of your automatic crossbow and fight for every second of survival against a relentless demonic horde!

I'm a part of the first generation born into a free Poland, after 123 years of foreign occupation. The outbreak of WWII stripped me of my family, home, and future. We're angry, tired, but united. We're itching to do something, to regain some measure of control over our lives. My companions and I feel like we have only one choice: to get revenge and win back independence for our city and nation, or die trying.

The odds are overwhelmingly against us. We're like brothers and sisters, emboldened by our fighting spirit, relying on our wits, stealth and teamwork. But will it all be enough?

Night Slashers is a pulse-pounding, horror-themed beat 'em up game, in a nightmarish world filled with bloodthirsty creatures and unspeakable horrors. Prepare to step into the shoes of the unlikely heroes, as they battle hordes of supernatural foes and terrifying monsters.

In Night Slashers, you're not just fighting for survival: you're battling to save the world from a supernatural apocalypse. Join the fight, experience the adrenaline, and embrace the horror. Your darkest nightmares await…

Night Slashers is a classic arcade game that originated in 1994 and still stands as one of the best titles in the beat 'em up genre to this day! Gameplay consists of seven distinct stages, each subdivided into multiple sections. You can advance by navigating from left to right within each stage, combating waves of enemies to progress.

Attempting to proceed further without eliminating foes halts the screen’s scroll until all the threats are dealt with. Upon reaching the end of each level, a climactic showdown with a formidable boss awaits. Achieve victory over the boss to advance.

Deep in the Missouri countryside, a small town is being ravaged by a series of murders at the old Clover Hill Apartments. After a traumatic brain injury and the passing of his late wife, homicide detective David Hernandez is determined to bury himself in his work and investigate the mysterious complex.

Pneumata is a true Lovecraftian survival horror with disturbing and brutal gameplay, enveloped by the psychological horrors that exist somewhere between reality and the beyond. With a fractured mind you must: Investigate, explore, and fight for your life as you lose yourself trying to survive the unimaginable horrors within the walls of Clover Hill. Find items, weapons, and clues that will help you uncover the sinister truth behind it all as the only way forward is to delve deeper.

Bring the heat with a threesome of fun in Jackbox Naughty Pack. Find out who’s the best liar in Fakin’ It All Night Long, illustrate spicy prompts in Dirty Drawful, and answer questions like “How does this avocado get aroused?” in Let Me Finish.

Dive into the streets of New York City in 2024, where the delicate balance of power hangs by a thread. Navigate the treacherous waters of vampiric politics as you contend with the ever-shifting landscape between the Camarilla and Anarchs. In a city where every move could mean the difference between unlife and final death, will you carve out your own destiny amidst the chaos or will your ambition spell your doom?

Vampire: The Masquerade - Reckoning of New York invites you to immerse yourself in the third installment of this gripping visual novel series, set against the backdrop of a modern-day metropolis teeming with supernatural intrigue. Embrace the darkness as a Kindred, a vampire thrust into a world of danger and betrayal where survival is paramount.

We all know you love shooting zombies, so what are you waiting for? Come, explore around and increase your body count...

You're the current contestant in a twisted game environment designed by Billy himself, for his own twisted enjoyment. Billy's Game Show set is made for you to choose your own path, but remember, it's Billy's game, and he sets the rules. He will challenge you with traps, hidden paths, different puzzles, and most importantly, three generators which need you to consistently keep an eye open, otherwise, they will eliminate you.

Manage the emergency services in any city in the world! Take calls and dispatch rescue forces. Handle difficult situations, now depending on the weather, terrain and traffic. Help the citizens through cataclysms and natural disasters, becoming a better emergency number operator every day!

Immerse yourself in the dark world of scientific experiments in "Zombie Fall Survival Challenge." You are the result of mad experiments, a zombie who must endure terrifying trials in a secret laboratory.
You will face deadly traps such as sharp blades, flamethrowers, trampolines, and many others. Each step could be your last, but even if you lose limbs, you cannot be stopped! Crawl, climb, and find ways to overcome all obstacles and reach the finish line.
The game boasts stunning graphics and captivating animations, creating a realistic atmosphere of horror and tension. Navigate through numerous levels, each presenting a new challenge that will test your skills to the limit.
Customize your zombie with a variety of costumes and change its appearance to your liking. Each challenge becomes even more exciting when your character looks unique.
Immerse yourself in the dark world of scientific experiments in "Zombie Fall Survival Challenge." You are the result of mad experiments, a zombie who must endure terrifying trials in a secret laboratory.
You will face deadly traps such as sharp blades, flamethrowers, trampolines, and many others. Each step could be your last, but even if you lose limbs, you cannot be stopped! Crawl, climb, and find ways to overcome all obstacles and reach the finish line.
The game boasts stunning graphics and captivating animations, creating a realistic atmosphere of horror and tension. Navigate through numerous levels, each presenting a new challenge that will test your skills to the limit.
Customize your zombie with a variety of costumes and change its appearance to your liking. Each challenge becomes even more exciting when your character looks unique.

Do you like whips? Have you ever wanted an accurate, next-generation, stimulating whip simulator? Well, this game is far from it, but at least it tries! This is a top-down game where you move a whip around with 2D physics.

Take control of Jim-Jack Rousseau’s trusty whip and progress through 11 levels in this small adventure. Beat some people up, beat some animals up, and even beat up your bad thoughts with some whip force. Follow your dreams of becoming the hero you always wanted to be… or not…

And maybe by the end of this, you’ll learn the absolute meaning of the state of nature*
(*note: it says “maybe”)

Dustborn is a single-player, story-driven action-adventure game about hope, love, friendships, robots…and the power of words.

You play Pax: exile, con-artist, Anomal — with the ability to weaponize language. Looking for a new life and a way out, Pax has been hired to transport an important package from Pacifica to Nova Scotia, across the Justice-controlled American Republic. Sounds like a legit reason for a road-trip, right?

So pack your bags, assemble a crew with their own peculiar powers, and get ready to travel the country!

Explore the stunning Neo-Western landscapes of an alternate history America on a robot-driven tour bus, and stop at a dozen locations along the road to build your crew, manage relationships, complete missions, and face increasingly difficult challenges. But the people you stole the package from want it back, and the authoritarian Justice is hot on your heels, so don’t forget to pack your baseball bat!

(And, oh yeah, you’re travelling undercover as a punk-rock band, so you’ll definitely need to brush up on your musical skills before your next gig.)
At the end of the road lies salvation…but to get there, you’ll need to cross an entire continent.

Rewind or Die is a heart-thumping, blood-dripping blast from the past. Your co-worker flaked out on their shift yet again and it's up to you to cover them. And of course, there's a serial killer who's been staking their claim in that area. Just another day at a video rental store... right?

Deal with irate customers, horrible bosses and keep your VHS store clean (or at least as clean as it can be). Don't worry about the occasional creepy phone call or that person watching you through the front window, it's all part of the job.

Developed by id Software, and originally released in 1993, DOOM pioneered and popularized the first-person shooter, setting a standard for all FPS games. The critically acclaimed sequel, DOOM II, followed in 1994.  Now the definitive, newly enhanced versions of DOOM + DOOM II are available as a combined product.

Welcome to Death Noodle Delivery.Deliver the noodles, don’t waste a single portion and most importantly… try not to die.

Ride your hoverboard and deliver your boss’ noodles, but be careful: there are plenty of dangers lurking in this cyberpunk city on the brink of collapse, from AI drones to bad drivers, I’d keep your eyes on the road.

Upgrade your old hoverboard from a rusty ironing board to a perfected killing machine. Jailbreak AI paywalls and unlock new power-ups that let you manipulate time and launch explosive cats!

Talk to your neighbours and find out their dirty stories. Browse the web for hacks and pleasure. Survive long enough, and you may discover that this world hides a terrible secret.

The Lakeview Cabin Collection is an exploration of the world of cult horror movies in this action puzzler through four episodes, each with their own unique themes and features. Play as four companions as they use anything they can get their hands on to survive in a horror experience unlike any other.

With hours of dynamic, choice-driven gameplay and lots of replayability, Roope Tamminem delivers an open ended 16-bit bloodbath where you choose the outcome!

Live the future of despair.

Story:
The year is 2024 AD. Mankind has won the long battle against the unknown invaders. The enemy Primers are now gone and peace has returned to Mother Earth. However, the population has shrunk to 10% and the world was on the verge of collapse. The survivors fought against the remaining threats while trying their best to continue their recovery. Three years passed in the year 2027. In a new world without hope, the time has come to once again resist the fate of the Earth.

Save the future of Earth in the new world.
The identity of the invader that has long tormented Earth is finally revealed. A chain of deep despair that strikes in a devastated world for the first time in the series...But your presence as a soldier of the EDF will lead humanity to the greatest joy. Now you must face it with courage and wisdom.

The largest volume in the history of the series. Supports online co-op play.
The largest number of missions and weapons ever included. All missions support online co-op play for up to four players. Offline co-op play is also available in split-screen mode. Take control of four different soldier classes and fight alongside real EDF members from across the country.

Have you ever dreamed of finding a good company for tabletop role-playing games? Of creating a party of brave and reckless girls who defeat their rivals with the power of love and lust? Of seducing a dragon instead of fighting? EmyLiveShow: Dragon & Mistresses Tale can make those dreams come true!
Dive into the lore of the fantasy world and guide three adventurers through it. Fight monsters, romance charming strangers, find powerful artifacts. Save the world and don't forget to thank your game master at the end of the session!

Battle monsters, investigate insidious conspiracies and explore the dark side of (in)human nature in Werewolf: The Apocalypse — Purgatory, a unique blend of dark fantasy thriller, visual novel and tabletop RPG set in the World of Darkness universe.

Best PS4 Mature Games

I'll save the world of harem - Isekai Harem Saver -

Camp Sunshine

Skautfold: Into the Fray

CROSSBOW: Bloodnight

63 Days

Night Slashers: Remake

Pneumata

The Jackbox Naughty Pack

Vampire: The Masquerade - Reckoning of New York

Daylight Dread

Billy's Game Show

112 Operator

Zombie Fall: Survival Challenge

Naive Boy Super Lash

Dustborn

Rewind Or Die

Lunar Nightmare

DOOM + DOOM II

Plastomorphosis

Thank Goodness You're Here!

Death Noodle Delivery

Lakeview Cabin Collection

EARTH DEFENSE FORCE ６

EmyLiveShow: Dangers and Mysteries Tale

Werewolf: The Apocalypse — Purgatory