The choice of selected backgrounds was based on personal preference and quality. This showcase will be continuously updated with new finds and suggestions, so don't be shy to share your thoughts.

Name: Access Point ┃ Game: Transistor ┃ Link
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Name: Nightmare ┃ Game: Niko: Through The Dream ┃ Link
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Name: ShaoJun ┃ Game: Assassin’s Creed® Chronicles: China ┃ Link
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Name: Solo Nobre High Rise ┃ Game: Brigador ┃ Link
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Name: Dancing In The Dark ┃ Game: AIPD - Artificial Intelligence Police Department ┃ Link
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Name: Pool Nation Background 3 ┃ Game: Pool Nation ┃ Link

Name: Action Poster ┃ Game: Clandestine ┃ Link
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Name: SURVARIUM - SOOTHSAYER ┃ Game: Survarium ┃ Link
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Name: Turning Point ┃ Game: Tomb Raider ┃ Link
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Name: Guarded ┃ Game: Counter-Strike: Global Offensive ┃ Link
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Name: Wolf ┃ Game: PAYDAY 2 ┃ Link
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Name: The Crew ┃ Game: PAYDAY 2 ┃ Link
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Name: Ash ┃ Game: Tom Clancy's Rainbow Six Siege ┃ Link
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Name: Mute ┃ Game: Tom Clancy's Rainbow Six Siege ┃ Link

Name: Hail to the Queen! ┃ Game: Coffin of Ashes ┃ Link
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Name: Crystal of Memories ┃ Game: Coffin of Ashes ┃ Link
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Name: The Polar Laboratory - dark - ┃ Game: Malus Code ┃ Link
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Name: The Polar Laboratory - light - ┃ Game: Malus Code ┃ Link
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Name: Yae & Suzukake ┃ Game: Malus Code ┃ Link
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Name: Packoy Party ┃ Game: Ne no Kami - The Two Princess Knights of Kyoto ┃ Link
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Name: Hannah - Store Manager ┃ Game: Negligee ┃ Link
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Name: Jasmin - Applicant ┃ Game: Negligee ┃ Link
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Name: Gochi-Show Profile Background 4 ┃ Game: Gochi-Show! ┃ Link
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Name: Swimwear ┃ Game: Summer Fling ┃ Link
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Name: Bikini's ┃ Game: Summer Fling ┃ Link
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Name: High School Girls ┃ Game: Mahjong Pretty Girls Battle ┃ Link
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Name: School Girls ┃ Game: Mahjong Pretty Girls Battle ┃ Link
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Name: Idols ┃ Game: Mahjong Pretty Girls Battle ┃ Link
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Name: Cat Sakurai Sisters ┃ Game: Mahjong Pretty Girls Battle ┃ Link
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Name: SchoolUniform1 ┃ Game: Mahjong Pretty Girls Battle : School Girls Edition ┃ Link
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Name: SchoolUniform2 ┃ Game: Mahjong Pretty Girls Battle : School Girls Edition ┃ Link
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Name: SchoolUniform3 ┃ Game: Mahjong Pretty Girls Battle : School Girls Edition ┃ Link
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Name: CheerleaderUniform ┃ Game: Mahjong Pretty Girls Battle : School Girls Edition ┃ Link
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Name: Leotard ┃ Game: Mahjong Pretty Girls Battle : School Girls Edition ┃ Link
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Name: Shantae & Risky Boots ┃ Game: Shantae and the Pirate's Curse ┃ Link
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Name: Summer Shantae & Risky Boots ┃ Game: Shantae and the Pirate's Curse ┃ Link
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Name: Changing Room Shock ┃ Game: Highschool Romance ┃ Link
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Name: Congratulations ┃ Game: True Love ～Confide to the Maple～ ┃ Link

Name: Cloudbank ┃ Game: Transistor ┃ Link‎‎‎‎
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Name: The Overseer ┃ Game: Neon Chrome ┃ Link
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Name: Concept Art ┃ Game: BioShock 2 Remastered ┃ Link
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Name: Shelter's Evacuation Station ┃ Game: Afterfall InSanity Extended Edition ┃ Link
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Name: The Fallen Angel ┃ Game: Afterfall InSanity Extended Edition ┃ Link

Name: Echoes in the Darkness ┃ Game: Tormentum - Dark Sorrow ┃ Link
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Name: Streumonic ┃ Game: E.Y.E: Divine Cybermancy ┃ Link
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Name: Family ┃ Game: E.Y.E: Divine Cybermancy ┃ Link
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Name: White Queen vs. Black Queen ┃ Game: Battle vs Chess ┃ Link
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Name: Companions ┃ Game: Dragon's Prophet (EU) ┃ Link
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Name: Title Monsters ┃ Game: Nightbanes ┃ Link
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Name: Все Герои ┃ Game: TERA ┃ Link
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Name: Shandra Manaya ┃ Game: TERA ┃ Link
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Name: Elin and Popori ┃ Game: TERA ┃ Link
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Name: Castanic and Aman ┃ Game: TERA ┃ Link
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Name: Argons ┃ Game: TERA ┃ Link
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Name: Vengeful Spirit ┃ Game: Dota 2 ┃ Link
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Name: Dragon ┃ Game: Dota 2 ┃ Link
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Name: Liliana Vess ┃ Game: Magic Duels ┃ Link
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Name: Vietnam ┃ Game: Magicka ┃ Link

Name: Forest ┃ Game: Spirits ┃ Link
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‎‎‎‎Name: Catacomb Background ┃ Game: Dream ┃ Link
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Name: Dream of a Garden ┃ Game: Dream ┃ Link
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Name: Dusk ┃ Game: BADLAND: Game of the Year Edition ┃ Link
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Name: Dawn ┃ Game: BADLAND: Game of the Year Edition ┃ Link
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Name: Daydream ┃ Game: BADLAND: Game of the Year Edition ┃ Link
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Name: Hive Room ┃ Game: Natural Selection 2 ┃ Link
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Name: The Wilderness ┃ Game: Sanctum 2 ┃ Link
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Name: Brown’s Shack ┃ Game: Marble Duel ┃ Link
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Name: Swamp ┃ Game: Marble Duel ┃ Link
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Name: Outland Jungle ┃ Game: Outland ┃ Link
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Name: Orclands ┃ Game: The Dark Eye: Chains of Satinav ┃ Link
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Name: Forest ┃ Game: InFlux ┃ Link
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Name: Dino Horde ┃ Game: ORION: Prelude ┃ Link
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Name: Clifftops ┃ Game: PONCHO ┃ Link

Name: Drowning ┃ Game: Dead Island ┃ Link
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Name: Titan's Realm ┃ Game: DOOM ┃ Link
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Name: Priests ┃ Game: Niffelheim ┃ Link
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Name: Telur, The God ┃ Game: Sacred Almanac Traces of Greed ┃ Link
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Name: Clots ┃ Game: Killing Floor 2 ┃ Link
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Name: Zombie Horde ┃ Game: Dead Rising ┃ Link
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Name: Staring Into Darkness ┃ Game: Dead Rising 3 ┃ Link
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Name: Talimar The Black ┃ Game: Shadowgate ┃ Link
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Name: Linda's Demise ┃ Game: DreadOut ┃ Link
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Name: The Chase ┃ Game: DreadOut ┃ Link
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Name: Light & Heavy ┃ Game: Counter-Strike Nexon: Zombies ┃ Link
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Name: Face-Off ┃ Game: Dispatcher ┃ Link
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Name: Holy zombies! ┃ Game: Trapped Dead ┃ Link
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Name: Herd ┃ Game: Trapped Dead ┃ Link
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Name: Odallus: The Dark Call ┃ Game: Odallus: The Dark Call ┃ Link
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‎Name: Skulls ┃ Game: Rock 'N' Roll Defense ┃ Link
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Name: Wounded World ┃ Game: TERA ┃ Link
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Name: Bad Looking Dudes ┃ Game: TERA ┃ Link
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Name: Dragons ┃ Game: TERA ┃ Link
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Name: Eldritch ┃ Game: TERA ┃ Link
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Name: Lepotitsa ┃ Game: Resident Evil 6 / Biohazard 6 ┃ Link
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Name: Ultra Meat Man ┃ Game: Super Meat Boy ┃ Link
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Name: The Cyborg Midwives ┃ Game: System Shock 2 ┃ Link

Name: SHODAN ┃ Game: System Shock 2 ┃ Link
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Name: Confrontation ┃ Game: System Shock 2 ┃ Link
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Name: Terminal Standoff ┃ Game: Perpetuum ┃ Link
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Name: Lady Z ┃ Game: Shadowrun Returns ┃ Link
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Name: Sparks ┃ Game: Dirty Bomb ┃ Link
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Name: Proxy ┃ Game: Dirty Bomb ┃ Link
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Name: Dark Queen ┃ Game: Star Conflict ┃ Link
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Name: Gordon & Alyx 2 ┃ Game: Half-Life 2 ┃ Link

Name: Castanica ┃ Game: TERA ┃ Link
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Name: Crucia ┃ Game: RIFT ┃ Link
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Name: Linda & Siska ┃ Game: DreadOut: Keepers of The Dark ┃ Link
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Name: Lady & Trish ┃ Game: Devil May Cry 4 Special Edition ┃ Link
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Name: Revelations - Femme Fatale ┃ Game: Resident Evil Revelations ┃ Link
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Name: Choi Ji Yoon & Natasha ┃ Game: Counter-Strike Nexon: Zombies ┃ Link
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Name: Bodyguard ┃ Game: Neon Chrome ┃ Link
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Name: Viola And Kiki DeWynter ┃ Game: Saints Row: The Third ┃ Link
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Name: Shaundi ┃ Game: Saints Row: The Third ┃ Link
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Name: Kinzie and Shaundi ┃ Game: Saints Row IV ┃ Link
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Name: Invasion ┃ Game: Duke Nukem 3D: Megaton Edition ┃ Link
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Name: Poster Girl ┃ Game: Jagged Alliance Flashback ┃ Link
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Name: Floating Mya ┃ Game: Catmouth Island ┃ Link

Name: Clear Skies ┃ Game: Sirius Online ┃ Link
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Name: Caldari State ┃ Game: EVE Online ┃ Link
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Name: EVE Online: Odyssey ┃ Game: EVE Online ┃ Link
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Name: Wormhole Exploration ┃ Game: EVE Online ┃ Link
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Name: Hive Horizon ┃ Game: Starion Tactics ┃ Link
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Name: Concept Art #4 ┃ Game: Strike Suit Zero: Director's Cut ┃ Link
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Name: Space 1 ┃ Game: Defy Gravity ┃ Link
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Name: Nebula Y ┃ Game: Optika ┃ Link
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Name: Planet Ocean ┃ Game: Switch Galaxy Ultra ┃ Link
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Name: Planet Impact ┃ Game: Switch Galaxy Ultra ┃ Link
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Name: ASTEROIDS ┃ Game: Starlaxis Supernova Edition ┃ Link
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Name: BROKEN PLANET ┃ Game: Starlaxis Supernova Edition ┃ Link
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Name: Arkhona ┃ Game: Warhammer 40,000: Eternal Crusade ┃ Link
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Name: Heart Nebula ┃ Game: Star Horizon ┃ Link
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Name: Dark Side ┃ Game: BossConstructor ┃ Link
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Name: Asteroids ┃ Game: Space Rangers: Quest ┃ Link
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Name: Nebula ┃ Game: Space Rangers: Quest ┃ Link
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Name: Nebulae ┃ Game: Space Rangers HD: A War Apart ┃ Link
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Name: Purple Sky ┃ Game: Space Rangers HD: A War Apart ┃ Link

Name: Hindsight ┃ Game: Life Is Strange ┃ Link
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Name: Melee Weapons ┃ Game: Last Survivor ┃ Link
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Name: Lutefisk Shrine ┃ Game: Dungeons of Dredmor ┃ Link
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Name: Hartman ┃ Game: INFRA ┃ Link
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Name: Summer Getaway Map ┃ Game: Steam Summer Getaway ┃ Link
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Name: Colt M1911 ┃ Game: World of Guns: Gun Disassembly ┃ Link
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Name: Colt M1911 Background ┃ Game: World of Guns: Gun Disassembly ┃ Link
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Name: Four Kings Casino: The Kings Court ┃ Game: The Four Kings Casino and Slots ┃ Link
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Name: Doodles ┃ Game: The Binding of Isaac: Rebirth ┃ Link

Sites below facilitate a ‎‎‎‎preview of any Steam background before use/purchase. They also have many other very useful features worth trying out.
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Name: Steamcard Exchange ┃ Link[www.steamcardexchange.net]
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Name: Steam Design ┃ Link[steam.design]
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Name: Cyber Daemon ┃ Link[www.cyberdaemon.org]

Please be sure to and this guide at the top.