| Train Simulator: China Clay for Export Route Add-On | 2015 | Creative Rail | Microsoft Windows |
| Train Simulator: Southern Class 455/8 EMU Add-On | 2015 | Dovetail Games | Microsoft Windows |
| Sim Junta | 2015 | — | Microsoft Windows |
| Pike and Shot : Campaigns | 2015 | Byzantine Games | Microsoft Windows |
| Train Simulator: The Racetrack: Aurora - Chicago Route Add-On | 2015 | — | Microsoft Windows |
| Everybody's Gone to the Rapture | 2015 | The Chinese Room | Microsoft Windows, PlayStation 4 |
| Score! Hero | 2015 | First Touch Games | iOS, iPadOS, Android |
| Train Simulator: D&RGW SD50 Loco Add-On | 2015 | Digital Train Model | Microsoft Windows |
| Train Simulator: West Highland Line (South) Route Add-On | 2015 | Milepost Simulations | Microsoft Windows |
| Rare Replay | 2015 | Rare Ltd. | Xbox One |
| Superstar Dance Club | 2015 | Atomic Planet Entertainment | Microsoft Windows |
| Dream | 2015 | HyperSloth | Microsoft Windows |
| Magic Duels: Origins | 2015 | Stainless Games | Microsoft Windows, iOS |
| Tale of Wuxia | 2015 | Heluo Studio | Microsoft Windows, PlayStation 4 |
| The Swindle | 2015 | Size Five Games | PlayStation 3, Xbox One, Microsoft Windows, macOS, PlayStation Vita, Nintendo Switch, PlayStation 4, Wii U |
| Russian Front | 2015 | — | Microsoft Windows, macOS |
| Train Simulator: DB BR 152 Loco Add-On | 2015 | Dovetail Games | Microsoft Windows |
| Train Simulator: Munich - Rosenheim Route Add-On | 2015 | Dovetail Games | Microsoft Windows |
| Super Dungeon Run | 2015 | Proper Games | Microsoft Windows, macOS, Linux |
| Legions of Steel | 2015 | — | Microsoft Windows |
| Train Simulator: D&RGW SD9 Loco Add-On | 2015 | Dovetail Games | Microsoft Windows |
| Worms World Party Remastered | 2015 | Team17 | Microsoft Windows |
| Sakura Day Mahjong | 2015 | Creobit | Microsoft Windows, macOS |
| Tank Battle: Blitzkrieg | 2015 | HexWar Games | Microsoft Windows, macOS, iOS |
| Contradiction: Spot the Liar! | 2015 | — | Microsoft Windows, macOS, iOS |
| Spectra | 2015 | — | Microsoft Windows, macOS, Linux |
| Coffin Dodgers | 2015 | Milky Tea | Xbox One, Microsoft Windows, macOS, Nintendo Switch, Linux, PlayStation 4 |
| Cricket Captain 2015 | 2015 | — | Microsoft Windows |
| Train Simulator: WCML Trent Valley Route Add-On | 2015 | Thomson Interactive | Microsoft Windows |
| Yatagarasu Attack on Cataclysm | 2015 | PDW:HOTAPEN | Microsoft Windows |
| Devouring Stars | 2015 | Nerial | Microsoft Windows, macOS, Linux |
| NotGTAV | 2015 | NotGames | Microsoft Windows, macOS, Linux, iOS, Android |
| Quadcopter Pilot Challenge | 2015 | TACS Games | Wii U |
| Revolution Under Siege Gold | 2015 | — | Microsoft Windows |
| Train Simulator: BR GT3 Turbine Loco Add-On | 2015 | Victory Works | Microsoft Windows |
| Train Simulator: PRR RF-16 'Sharknose' Loco Add-On | 2015 | Digital Train Model | Microsoft Windows |
| Train Simulator: BR Class 105 DMU Add-On | 2015 | Dovetail Games | Microsoft Windows |
| Train Simulator: Weardale & Teesdale Network Route Add-On | 2015 | Dovetail Games | Microsoft Windows |
| Her Story | 2015 | Sam Barlow | Microsoft Windows, macOS, iOS, Android |
| Batman: Arkham Knight | 2015 | Rocksteady Studios | Xbox One, Microsoft Windows, macOS, Linux, PlayStation 4 |
| Train Simulator: DB BR 120 Loco Add-On | 2015 | Dovetail Games | Microsoft Windows |
| Construction Simulator 2015 | 2015 | Astragon | Microsoft Windows, macOS, Linux |
| Rugby League Team Manager 2015 | 2015 | Alternative Software | Microsoft Windows |
| Cave Coaster | 2015 | — | Microsoft Windows |
| Star Hammer: The Vanguard Prophecy | 2015 | Black Lab Games | Microsoft Windows, macOS, iOS, PlayStation 4 |
| You Must Build a Boat | 2015 | EightyEight Games | Microsoft Windows, macOS, Linux, iOS, Android |
| Lego Jurassic World | 2015 | Traveller's Tales | PlayStation 3, Xbox One, Microsoft Windows, macOS, PlayStation Vita, Nintendo Switch, Nintendo 3DS, Xbox 360, iOS, PlayStation 4, Wii U, Android |
| LEGO Worlds | 2015 | Traveller's Tales, TT Games | Xbox One, Microsoft Windows, Nintendo Switch, PlayStation 4 |
| Train Simulator: Gatwick Express Class 442 'Wessex' EMU Add-On | 2015 | Dovetail Games | Microsoft Windows |
| Looney Tunes: Galactic Sports | 2015 | — | PlayStation Vita |
| Portal of Evil: Stolen Runes Collector's Edition | 2015 | 8floor | Microsoft Windows |
| Fort Defense | 2015 | Creobit | Microsoft Windows, macOS |
| NASCAR '15 | 2015 | Eutechnyx | Microsoft Windows |
| Carmageddon: Reincarnation | 2015 | Stainless Games | Xbox One, Microsoft Windows, PlayStation 4 |
| Porcunipine | 2015 | Big Green Pillow | Microsoft Windows, macOS |
| Technobabylon | 2015 | — | Microsoft Windows, macOS, Linux, iOS |
| Train Simulator: Soldier Summit Route Add-On | 2015 | Dovetail Games | Microsoft Windows |
| Unlimited Escape 3 & 4 Double Pack | 2015 | — | Microsoft Windows |
| Not A Hero | 2015 | Roll7, Devolver Digital | Xbox One, Microsoft Windows, macOS, Linux, PlayStation 4, Android |
| Train Simulator: LNER Peppercorn Class A2 'Blue Peter' Loco Add-On | 2015 | Dovetail Games | Microsoft Windows |