S.T.A.L.K.E.R: Call of Pripyat

Inspired game: OpenXRay

SameGame

Inspired game: SliSame

Scorched Earth

Inspired games: Atomic Tanks, Scorched3D, Soldat

Scrabble

Inspired games: Crosswords, Scrabble3D

SCUMM

Inspired game: ScummVM

Sea Dogs: To Each His Own

Inspired game: Storm Engine

Sea Wolf

Inspired game: Sea-Wolf

Second Life

Inspired games: Open Simulator, Vircadia

Sensible Soccer

Inspired games: Freekick 3, Tux Football, YSoccer

Sensitive

Inspired games: One Way To Go, sensitive-js

Septerra Core: Legacy of the Creator

Inspired game: SR

Serious Sam: The First Encounter

Inspired game: Serious Engine

Serious Sam: The Second Encounter

Inspired games: Serious Engine, Serious Sam Android

Settlers

Inspired game: Battles of Antargis

Settlers of Catan

Inspired games: JSettlers, Pioneers

Seven Kingdoms: Ancient Adversaries

Inspired game: Seven Kingdoms: Ancient Adversaries

sfxr

Inspired game: rFXGen

Shadow of the Beast

Inspired game: shadow-of-the-beast-html5

Shadow Warrior

Inspired games: JonoF's Shadow Warrior Port (JFSW), Raze, SWP, XL Engine

Shadowgrounds: Survivor

Inspired game: Shadowgrounds

Sherlock

Inspired game: Einstein Puzzle

Ship Simulator 2006

Inspired game: Bridge Command

Ship Simulator 2008

Inspired game: Bridge Command

Ship Simulator Extremes

Inspired game: Bridge Command

Shobon Action

Inspired game: Open Syobon Action

Sid Meier's Alpha Centauri

Inspired game: Freeciv Alpha Centauri project

Sid Meier's Colonization

Inspired games: cc94, FreeCol

Sid Meier's Pirates!

Inspired game: Crown and Cutlass

Siege

Inspired game: FreeSiege

Siege of Avalon

Inspired game: Siege of Avalon : Open Source

Signus: The Artefact Wars

Inspired game: Signus: The Artefact Wars

Silent Hill 3

Inspired game: sh3redux

Silent Hunter 4

Inspired game: Danger from the Deep

SimCity

Inspired games: 3d.city, Citybound, Cytopia, Divercity, Lincity, LinCity-NG, Micropolis, micropolisJS, OpenCity

SimCity 2000

Inspired game: OpenSC2K

SimCopter

Inspired game: sccopter

Simon

Inspired game: asdf

Simon Says

Inspired game: Blinken

SimTower

Inspired game: OpenSkyscraper

SingStar

Inspired games: Performous, UltraStar Deluxe, UltraStar Play, Vocaluxe

Skat

Inspired game: XSkat

SkiFree

Inspired games: Skifree-HTML5-clone, skifree.js

Skool Daze

Inspired game: Pyskool

SkyRoads

Inspired games: OpenRoads, Orbit-Hopper

Slime Volleyball

Inspired game: Slime Volleyball

Slot Racers

Inspired game: Slot-Racers

Snake

Inspired games: Armagetron Advanced, GLtron, Gusty's Serpents, KSnakeDuel, Mop(e)snake, SliSnake, snake

Sokoban

Inspired games: AdaGate, Berusky, CavePacker, GJID, JSoko, kiki the nano bot, Puzzle Moppet, Rocks'n'Diamonds, Simple Sokoban, Sokoban, SokoSolve, Xye

Solar Fox

Inspired game: SolarWolf

Soldat

Inspired game: Soldank

Solomon's Key

Inspired game: OpenSolomonsKey

Sonic the Hedgehog series

Inspired games: Open Surge, Sonic Robo Blast 2

Sopwith

Inspired games: SDL Sopwith, Sopwith 3

Space Empires IV

Inspired game: FrEee

Space Federation: Galactic Conquest

Inspired game: A Planet's Revenge

Space Harrier

Inspired game: Space Harrier Clone

Space Invaders

Inspired games: Hopson-Arcade, MicroWar 2.0, XInvaders 3D

Space Rangers 2: Dominators

Inspired game: OpenSR

Space Station 13

Inspired games: Griefly, SS13 Remake, unitystation

Space Taxi

Inspired game: Moagg2

Space Trader

Inspired games: Space Trader for Android, Space Trader for Windows, SpaceTrader for Java

Spear of Destiny

Inspired games: C-Dogs SDL, ECWolf

Speed Haste

Inspired game: GLSpeed

Spelling Bee

Inspired game: Spelling Bee

Spore

Inspired game: Thrive

Star Control 2

Inspired games: star-control2, The Ur-Quan Masters

Star Ruler 2

Inspired game: Star Ruler 2

Star Trek: Birth of the Federation

Inspired game: Birth of the Empires

Star Trek: Voyager – Elite Force

Inspired game: RPG-X

Star Wars (1983 arcade game)

Inspired game: Star-Wars-III

Star Wars Episode I: Racer

Inspired game: OpenSWE1R

Star Wars Jedi Knight II: Jedi Outcast

Inspired games: JediOutcastLinux, OpenJK

Star Wars Jedi Knight: Dark Forces II

Inspired games: Gorc, OpenJKDF2

Star Wars Jedi Knight: Jedi Academy

Inspired games: JediAcademyLinux, OpenJK

Star Wars: Galactic Battlegrounds

Inspired game: openage

Star Wars: Knights of the Old Republic

Inspired game: reone

Star Wars: Knights of the Old Republic II – The Sith Lords

Inspired game: reone

Star Wars: Yoda Stories

Inspired games: DesktopAdventures, WebFun

StarCraft

Inspired games: Machinations, Magnetar, OpenHV, SCSharp, Stargus

Stardew Valley

Inspired game: Open Valley

Stars!

Inspired games: Freestars, NStars!, Stars! Nova

Starshatter

Inspired game: starshatter-open

StepMania

Inspired game: OpenITG

Story of Seasons series

Inspired game: Honey Town

Streets of Rage

Inspired game: OpenBOR

Strife

Inspired games: Chocolate Doom, Strife: Veteran Edition, The Eternity Engine, Zandronum

Stronghold

Inspired games: Sourcehold, Stone Kingdoms

Stunts

Inspired game: Ultimate Stunts

Sudoku

Inspired games: HoDoKu, MUSoSu, Simsu, Sudokuki

SunDog: Frozen Legacy

Inspired games: sundog, SunDog Resurrection, Sundog: Frozen Legacy

Supaplex

Inspired games: OpenSupaplex, Rocks'n'Diamonds, splexhd, Supaxl

Super Cars

Inspired game: Supercars III

Super Foul Egg

Inspired game: SuperFoulEgg

Super Hexagon

Inspired game: Open Hexagon

Super Mario

Inspired games: Infinite Mario Bros, Mario Objects, Mega Mario, ReTux, Super Bombinhas, Super Mario Bros. X, SuperTux, TheXTech, uMario

Super Methane Brothers

Inspired games: Super Methane Brothers, Super Methane Brothers for Wii and GameCube

Super Metroid

Inspired game: Hexoshi

Super Monkey Ball

Inspired games: irrlamb, Neverball, Nuncabola, Veraball

Super Pang

Inspired game: Pang Zero

Super Smash Bros.

Inspired games: Smash, Super Tilt Bro, TUSSLE

Super ZZT

Inspired games: Reconstruction of Super ZZT, Roton, Zeta

SuperTux

Inspired game: Tux Builder

Supreme Commander

Inspired games: Spring: 1944, Zero-K

Survivor (1986)

Inspired game: Survivor

Swarm Assault

Inspired game: OpenSA

Swing

Inspired game: XSwing Plus

Syndicate

Inspired game: FreeSynd

Syndicate Wars

Inspired game: Syndicate Wars Port

System Shock

Inspired game: Shockolate

System's Twilight

Inspired game: System Syzygy