Ruiner

• Title — Ruiner • Developer — Reikon Games • Publisher — Devolver Digital • Engine — Unreal Engine 4 • Platforms — * Linux • Microsoft Windows • PlayStation 4 • Xbox One • Nintendo Switch • Released — Linux, Windows, PlayStation 4, Xbox One 26 September 2017 Nintendo Switch 18 June 2020 • Director — * Jakub Styliński • Benedykt Szneider • Programmer — Marek Roefler • Artist — Benedykt Szneider • Designer — * Jakub Styliński • Maciej Mach • Writer — * Magdalena Tomkowicz • Benedykt Szneider • Composer — Various • Genre — Twin-stick shooter • Modes — Single-player

Ruiner is a shoot 'em up played from an isometric perspective. The game takes place in 2091 and is set in a cyberpunk metropolis known as Rengkok. The player takes control of a silent, masked protagonist who attempts to rescue their kidnapped brother from a failing conglomerate, known as Heaven, that controls Rengkok.

Ruiner takes place in 2091 in Rengkok and its surrounding facilities, owned by Heaven, a conglomerate led by a man referred to in-game as the Boss. Initially the player character, a silent protagonist dubbed "Puppy" by another character, is being led by a rogue hacker named Wizard to assassinate the Boss. Before he reaches the Boss's office, the signal from Wizard to the protagonist is overridden by another hacker known only as Her. Her explains to Puppy that Wizard was contracted by another group and that his brother has been kidnapped, and urges him to track Wizard down. She leads him to a territory filled with Creeps, a group of psychotic gangsters led by a swordsman named Nerve. After fighting his way through the Creeps' territory, Nerve challenges Puppy to a duel and is defeated in battle. Earning the Creeps' leadership, they find Wizard and hack into his brain, killing him in the process and leading them to the Hanza Compound, a factory that manufactures machine parts. Her tracks Puppy's brother down with a signal leading to him. They are greeted by armed guards and the angry AI that manages the compound, Mother. Puppy fights his way through the Hanza facility and fights against mercenaries hired by TrafficKing, a cyborg in the form of a UFO-like device piloted by a human head, who runs the facility alongside Mother and presumably contracted Wizard. As he follows the signal that leads to his brother, Puppy battles Mother and then TrafficKing, hacking his brain to reveal where his brother is being taken; the Imagination Farms, which use human beings as hosts to lend brainpower for running Virtuality, a virtual reality device that Heaven manufactures and sells to civilians. As TrafficKing has clearance for entering these areas, Puppy and Her kidnap him to gain access to the farms. Puppy, led by Her and accompanied by the tamed TrafficKing, scour the Imagination Farms for his brother's signal, and are confronted by Geminus, a dual-personality cyborg that presents itself as two twin sisters that act as host to Mother. TrafficKing has been working for Geminus and it has been established that they were using Wizard to form a coup to overthrow the Boss and control Heaven. TrafficKing dies after begrudgingly helping Puppy through overheated obstacles, burning to death. Puppy confronts Geminus but is attacked by the resurrected TrafficKing, now controlling a humanoid cyborg body. Puppy kills him and battles Geminus, killing both sisters and finally finding the mechanical pod that holds his brother. Upon approaching it, a cutscene showing two small children leaving the facility plays, and the game cuts back to Heaven, where Puppy is restrained in a jumpsuit as two guards and the Boss, who wears a mask identical to Puppy's, approach him. The Boss reveals that Puppy was only being used for spare parts due to their biological similarity, and that he was hacked by Wizard as he could potentially be anywhere the Boss could be. Her is an independent hacker contracted by the Boss to hack Puppy and make him believe he had a brother who was kidnapped, thus leading him back to the Boss while also exterminating the people who attempted to overthrow him. The Boss remarks that he will keep Puppy closer to him, when Her makes a reappearance and reveals that she is not human and has been tricking the Boss since their agreement; she has led Puppy to Heaven to kill the Boss. Her advises Puppy to 'meet her where heaven falls' if he survives. He escapes his restraints and kills many of the Boss's guards before finally approaching the Boss himself, and, depending on a dialogue prompt, will either bludgeon him with his weapon or hack his brain. The ending shows Puppy riding away on his motorcycle to an unknown destination.

Ruiner was the first game to be developed by Polish indie game studio Reikon Games, with Devolver Digital funding and publishing the game. The game was released for Linux, PlayStation 4, Microsoft Windows, Xbox One on 26 September 2017. A Nintendo Switch version was released on June 18, 2020.

On March 5, 2026, Ruiner 2 was announced with addition to being an action-driven role-playing game and having co-op multiplayer with up to three players.