15 Serious Sam

Serious Sam is a video game series created and primarily developed by Croteam. It consists predominantly of first-person shooters. The series follows the advances of mercenary Sam "Serious" Stone against Mental, an extraterrestrial overlord who attempts to destroy humanity at various points in time. The first game, Serious Sam: The First Encounter, was released for Microsoft Windows in March 2001. Several spin-offs were developed by other developers, such as a Palm OS conversion of The First Encounter by InterActive Vision, Serious Sam: Next Encounter by Climax Solent, and Serious Sam Advance by Climax London. All three were published by Global Star Software.

I Hate Running Backwards is a 2018 shoot 'em up game developed by Binx Interactive and published by Devolver Digital. One or two players traverse procedurally generated levels using several characters, including Sam "Serious" Stone, the protagonist of the Serious Sam series. The screen scrolls vertically as the player character runs backwards through a partially destructible environment and battles enemies approaching from the bottom of the screen. The player can use two weapons, a melee attack, and an "ultimate" ability that requires the prior defeat of several enemies.

Serious Sam 2 is a first-person shooter video game released for Microsoft Windows and Xbox and the sequel to the 2001 video game Serious Sam. It was developed by Croteam and was released on 11 October 2005. The game was initially published by 2K Games, a Take-Two Interactive subsidiary. The game was later made available on Steam on 31 January 2012. While the game was originally released only for Microsoft Windows and Xbox, an unofficial Linux version of the game was created and is being handled by Linux Installers for Linux Gamers.

Serious Sam 3: BFE is a first-person shooter video game developed by Croatia-based indie development studio Croteam and published by Devolver Digital. It is part of the Serious Sam series and the prequel to the 2001 video game, Serious Sam. The game takes place in 22nd-century Egypt, during Mental's invasion on Earth, as implied in The First Encounter. The game features a 16-player online, as well as 4-player splitscreen co-op campaign mode. The game was first released for Microsoft Windows on 22 November 2011. The OS X support for the game followed shortly after and was released on 23 April 2012. The Linux version of the game started being worked on after a high number of requests, where the first Linux-related update was the porting of the game's dedicated server. The game itself, however, was released one day after Valve opened the beta branch for "Steam for Linux", namely 20 December 2012.

Serious Sam 4 is a 2020 first-person shooter developed by Croatian studio Croteam and published by Devolver Digital. It is part of the Serious Sam series and a prequel to Serious Sam 3: BFE. The game was announced in April 2018, originally as Serious Sam 4: Planet Badass, was released in September 2020 for Microsoft Windows and Stadia, and will be released for PlayStation 4 and Xbox One at a later date.

Serious Sam Advance is a 2004 first-person shooter game developed by Climax London and published by Global Star Software for the Game Boy Advance. A spin-off in the Serious Sam series, the game has the player control Sam "Serious" Stone through confined levels—first in ancient Egypt, then in ancient Rome—defeating varying enemies using an assortment of weapons. Serious Sam Advance was developed by Climax London, a studio of former Crawfish Interactive developers, using ray casting technology. Global Star Software announced the game in January 2004 and released it in April. Serious Sam Advance received mixed reviews, with praise for its weapons, enemies, level design and sound effects, conflicting opinions about its graphics, and criticism for its controls and frame rate issues.

Serious Sam Double D is a 2011 side-scrolling shooter game developed by Mommy's Best Games and published by Devolver Digital. The game follows Sam "Serious" Stone traveling through various historical settings to destroy the horde of his nemesis, Mental, and its teleportation beacons. As Sam, the player navigates 2D levels and can use the "gun stacker" to create vertical stacks of up to six weapons that are fired simultaneously. Enemies appear from all sides and their corpses can be used as platforms.

Serious Sam VR: The Last Hope is a 2017 first-person shooter game for virtual reality (VR) developed by Croteam VR and published by Devolver Digital. One or two players fight waves of enemies, including bosses, across five thematic planets. The enemies approach from a 180° field and the player can use dual-wielded weapons while moving across a limited space. To develop The Last Hope and experiment with other VR implementations, Croteam VR was established as a specialised division of Croteam. Devolver Digital announced the game at E3 in June 2016 and launched it in early access that October. After several updates, it was released in September 2017 for Microsoft Windows with compatibility for the HTC Vive and Oculus Rift VR headsets. The Last Hope received mostly positive reviews, with post-release reception lauding the game's gameplay and visuals while criticising difficulty spikes and issues with the online multiplayer mode.

Serious Sam: Kamikaze Attack! is a 2011 auto-running game developed by Be-Rad Entertainment and published by Devolver Digital. The player controls a Headless Kamikaze that chases after Sam "Serious" Stone, attempting to defeat him. The character moves automatically and can dodge or deflect incoming hazards. Announced in March 2011 and developed over six months, Kamikaze Attack! was created as part of the Serious Sam Indie Series to promote the launch of Serious Sam 3: BFE. It debuted for Android and iOS in September 2011, followed by a release for Microsoft Windows in January 2012. The game received a mixed reception, with praise for its controls, conflicting opinions about its visuals, and criticism for its repetitiveness and lack of appeal to non-fans of the Serious Sam series.

Serious Sam: Next Encounter is a 2004 first-person shooter game developed by Climax Solent and published by Global Star Software. As a spin-off in the Serious Sam series, it follows Sam "Serious" Stone, who tracks an unidentified enemy through ancient Rome, feudal China and Atlantis, and eliminates the forces the enemy controls to eventually uncover their identity. The player controls Sam through enclosed levels, fighting waves of enemies with an assortment of weapons and, occasionally, vehicles. Defeating enemies is a prerequisite to advance in a level and killing twenty in rapid succession temporarily grants a strength, speed and score boost in a "Super Combo". Two players can complete the campaign cooperatively and up to eight players can engage in versus modes.

Serious Sam: The First Encounter is a first-person shooter video game developed by Croteam and originally published by Gathering of Developers, first released on Microsoft Windows on 21 March 2001. It had been in development since 1996 and had videos showing its early gameplay in 2000. The First Encounter was originally developed by Croteam as a demonstrator for their engine, which was why some countries saw its initial release priced at less than half the price of other games in the genre. This game was followed by a sequel, Serious Sam: The Second Encounter, released eleven months later.

Serious Sam: The Random Encounter is a 2011 role-playing and bullet hell game developed by Vlambeer and published by Devolver Digital. It follows Sam "Serious" Stone travelling to the future in search of his nemesis, Mental, teaming up with mercenaries on the way. The player controls Sam and his accomplices through confined levels, engaging in battles through random encounters. These pit the player characters against large waves of enemies, and the player controls the weapons and items each character uses against them in five-second turns.

Serious Sam: The Second Encounter is a first-person shooter video game developed by Croteam and originally published by Gathering of Developers. First released on Microsoft Windows on 5 February 2002. It is the second episode following Serious Sam: The First Encounter released a year prior. Both episodes were combined into one game and ported to the Xbox. High-definition remakes of both episodes were released in 2009 and 2010 on Microsoft Windows, and were later ported to the Xbox 360, Nintendo Switch, PlayStation 4, and Xbox One video game consoles.

Serious Sam: Tormental is an upcoming top-down shooter and rogue-lite game developed by Gungrounds and published by Croteam Incubator. One or two players traverse procedurally generated levels set in the mind of Mental, the antagonist of the Serious Sam series. They use two weapons each, of which the primary weapon can be enhanced through "mods" found throughout the game. The unlockable player characters can also perform dodge rolls and a unique special ability. Enemies, including bosses, variously use melee and projectiles. Upon the player character's defeat, the player is reset to the start of the game.

Serious Sam's Bogus Detour is a 2017 twin-stick shooter game developed by Crackshell and published by Devolver Digital. One to four players traverse levels set in Egypt, Greece, and on the Moon, collecting weapons to be used against waves of enemies placed throughout the open areas. Character upgrades can be purchased using stars, which can be found within levels or obtained through experience points gained by killing enemies. Deathmatch and survival modes can be played with up to twelve players.