Steam Deck games: J
- ✌ Johnny RocketPlayable
- J.A.W.SPlayable
- J.U.L.I.A.: Among the StarsPlayable
- J.U.R : Japan Underground RacingPlayable
- Jack Axe: The TrialPlayable
- Jack Hayes: The Lazarus SignVerified
- Jack Holmes : Master of PuppetsPlayable
- Jack MoveVerified
- Jack Orlando: Director's CutPlayable
- JackalVerified
- Jackpot Valley SlotsVerified
- Jacksmith: Weapons and WarriorsPlayable
- Jacob's Quest Anniversary EditionPlayable
- JadedPlayable
- Jaden Williams' The Stalking StairsPlayable
- Jagged Alliance 3Playable
- Jagged Alliance FlashbackPlayable
- Jake's Halloween NightPlayable
- JalopyPlayable
- JamestownVerified
- JAMsVerified
- Jane Angel: Templar MysteryPlayable
- Jane The ReaperPlayable
- JanosikVerified
- Janosik 2Verified
- Janosik 2: PrologueVerified
- Japan Stigmatized Property -日本事故物件監視協会-Playable
- Japan Train Models - JR East EditionVerified
- Japan Train Models - JR West EditionPlayable
- Japanese Rail Sim: Hakone Town of Natural Beauty and Hot SpringsPlayable
- Japanese Ramen SimulatorPlayable
- Japanese Women - Animated JigsawsVerified
- Jardinains!Playable
- JARSPlayable
- JashPlayable
- Java JourneyPlayable
- JawbreakerPlayable
- JAWS: Retro EditionVerified
- Jay and Silent Bob: Chronic Blunt PunchPlayable
- Jay and Silent Bob: Mall BrawlPlayable
- JAZZ OUTPlayable
- Jazzpunk: Director's CutVerified
- JDM Tuner RacingPlayable
- JDM: Japanese Drift MasterPlayable
- Jeff The Killer: Horror GamePlayable
- Jeff the SkinnerPlayable
- Jeffrey EggsteinPlayable
- JellititoVerified
- Jelly Brawl: ClassicPlayable
- Jelly BubblePlayable
- Jelly KillerVerified
- JellyCar WorldsVerified
- Jenny LeClue - DetectivuVerified
- Jerma & Otto: The Curse of the Late StreamerPlayable
- Jerma's Big AdventureVerified
- JessikaPlayable
- Jester / KingPlayable
- Jester: A Foolish RitualPlayable
- Jesus SimulatorPlayable
- Jet GunnerPlayable
- Jet Kave AdventureVerified
- Jet LancerVerified
- Jetboard JoustVerified
- Jetborne RacingPlayable
- JETBOYVerified
- JETRUNNERPlayable
- JetstreamPlayable
- Jett RiderVerified
- JETT: The Far Shore + Given TimeVerified
- JettaturaPlayable
- Jewel Legends: AtlantisPlayable
- Jewel Legends: Tree of LifePlayable
- Jewel Match Aquascapes 2 Collector's EditionPlayable
- Jewel Match Aquascapes Collector's EditionPlayable
- Jewel Match Atlantis Solitaire 2 - Collector's EditionPlayable
- Jewel Match Atlantis Solitaire 3 - Collector's EditionPlayable
- Jewel Match Atlantis Solitaire 4 - Collector's EditionPlayable
- Jewel Match Dracula Collector's EditionPlayable
- Jewel Match Origins 2 - Bavarian Palace Collector's EditionPlayable
- Jewel Match Origins 3 - Camelot Castle Collector's EditionPlayable
- Jewel Match Solitaire 2 Collector's EditionPlayable
- Jewel Match Solitaire Collector's EditionPlayable
- Jewel Match Solitaire Fantasy - Collector's EditionPlayable
- Jewel Match Solitaire L'AmourPlayable
- Jewel Match Solitaire Seasons - Collector's EditionPlayable
- Jewel Match Solitaire SummertimePlayable
- Jewel Match Solitaire Winterscapes 2 - Collector's EditionPlayable
- Jewel Match Winter Wonderland 2 Collector's EditionPlayable
- Jewel Puzzle ClickVerified
- Jewel Quest Seven Seas Collector's EditionPlayable
- Jewel RunVerified
- JIAN YING JIANG HUPlayable
- JIANGHU CHRONICLESPlayable
- Jigokuraku: BATTLE IN HELL'S PARADISEPlayable
- Jigs4w3D Puzzle ChallengePlayable
- Jigsaw BestiaryPlayable
- Jigsaw MasterpiecesPlayable
- Jigsaw Puzzle Best PlacesVerified
- Jigsaw Puzzle DreamsPlayable
- Jigsaw Puzzle WorldPlayable
- Jigsaw Puzzles InfinitePlayable
- Jigsaw Puzzles: Master Artists of OldVerified
- JIJImago(old & young)RPGminiPlayable
- Jim Power -The Lost DimensionPlayable
- Jimmy and the Pulsating MassPlayable
- JinshinVerified
- JishogiVerified
- Jitsu SquadVerified
- JitterPlayable
- JMPRPlayable
- Joe 'n JoPlayable
- Joe DangerVerified
- Joe Danger 2: The MovieVerified
- Joe Dever's Lone Wolf HD RemasteredVerified
- Joe Wander and the Enigmatic AdventuresVerified
- Joey The DuckPlayable
- John Black: MemoriesPlayable
- John Carpenter's Toxic CommandoPlayable
- Johnny LionfaceVerified
- JoJo's Bizarre Adventure: All-Star Battle RPlayable
- Joker Poker - Video PokerVerified
- Joker Show - Horror EscapePlayable
- Jolly Good: Cakes and AleVerified
- Joltt - Battle PillarsPlayable
- Jonah Lomu Rugby Challenge 4Playable
- JonesvillePlayable
- Jooin's Romance FantasyVerified
- Jorel’s Brother and The Most Important Game of the Galaxy - Complete EditionPlayable
- Jotun: Valhalla EditionPlayable
- Jotunnslayer: Hordes of HelVerified
- JourneyVerified
- JourneyPlayable
- Journey ExpressPlayable
- Journey of a RoachVerified
- Journey of JohannVerified
- Journey Of LifePlayable
- Journey of Realm：Dawn DewPlayable
- Journey of the Garden RosePlayable
- Journey of WrestlingPlayable
- Journey to EchoPlayable
- Journey to IncrementaliaPlayable
- Journey to the Center of the EarthPlayable
- Journey to the Heart of GaiaPlayable
- Journey To The Savage PlanetVerified
- Journey to the VoidVerified
- Journey to the West SurvivorPlayable
- Journey UpPlayable
- Joy LandPlayable
- JOY OF PROGRAMMING - Software Engineering SimulatorVerified
- Joy-N Help MeVerified
- JoyquariumPlayable
- JoyvillePlayable
- Joyville 2Playable
- JPN BurstPlayable
- JQ: dogs & catsVerified
- Jrago The Demon HunterVerified
- Juan Sin MiedoPlayable
- JuderoVerified
- Judge Dredd: Dredd vs. DeathVerified
- Judge Of HasoonPlayable
- JudgeSimPlayable
- JudgmentVerified
- Judgment: Apocalypse Survival SimulationPlayable
- JudofuriPlayable
- Juice GalaxyPlayable
- Juicy RealmVerified
- Jujutsu Kaisen Cursed ClashPlayable
- Jukai MazePlayable
- Jumbo Airport StoryVerified
- Jump By Coronho: Chapter 2Playable
- Jump KingVerified
- JUMP KING QUESTPlayable
- Jump Off The BridgePlayable
- Jump PuzzlePlayable
- Jump SpaceVerified
- Jump TalePlayable
- Jumping Jazz CatsVerified
- JumpJet RexVerified
- Juna - The DreamwalkerPlayable
- Juniper's KnotPlayable
- Junji Ito Maniac: An Infinite GaolPlayable
- Junk JackPlayable
- Junk SurvivorPlayable
- JunkerBotPlayable
- JUNKPUNKPlayable
- JunksterVerified
- Junkyard BuilderVerified
- Junkyard SimulatorPlayable
- Junkyard TruckPlayable
- Juno: New OriginsPlayable
- Jupiter HellPlayable
- Jupiter Hell ClassicVerified
- Jurassic mahjongPlayable
- Jurassic World EvolutionVerified
- Jurassic World Evolution 2Verified
- Jurassic World Evolution 3Playable
- Jurig EscapePlayable
- Jurnal Risa: Dark DestinyPlayable
- JusantVerified
- just a game to test your lQPlayable
- Just a Little LongerPlayable
- Just a To the Moon Series Beach EpisodePlayable
- Just Act NaturalPlayable
- Just Another LifePlayable
- Just Another Night ShiftPlayable
- Just CausePlayable
- Just Cause 2Verified
- Just Cause 4 ReloadedPlayable
- Just Cause™ 3Playable
- Just Click The ButtonPlayable
- Just Crow ThingsVerified
- Just Die AlreadyVerified
- Just Dodge, LOLPlayable
- Just Eat Sushi!Playable
- Just Find ItPlayable
- Just Find It 2Playable
- Just Find It 3Playable
- Just GoPlayable
- Just Hit The ButtonPlayable
- Just Keep FishingVerified
- Just KingVerified
- Just Move Fall Dungeon Endless AbyssVerified
- Just Move:Clean City Messy BattleVerified
- Just One More LinkPlayable
- Just Read The InstructionsPlayable
- Just Shapes & BeatsVerified
- Just Ski+Verified
- Just skill shooter 2Playable
- Just XiangqiPlayable
- Justin Wack and the Big Time HackPlayable
- JustWatchMyCatPlayable
- Juufuutei Raden™'s Guide for Pixel MuseumPlayable
- JuxtapositionVerified