- Dynablaster RevengeReleased: January 8, 2015Platforms: Microsoft Windows, Linux
- Gunslugs 2Released: January 14, 2015Developer: Orange Pixel
- Roche FusionReleased: January 23, 2015Platforms: Microsoft Windows
- Dying LightReleased: January 27, 2015Series: Dying Light
- Just Get ThroughReleased: January 30, 2015Developer: Retrific
- SurvivalistReleased: January 30, 2015Engine: Microsoft XNA
- BlastZone 2Released: February 19, 2015Platforms: Microsoft Windows
- Camera ObscuraReleased: February 19, 2015Platforms: Microsoft Windows
- Over 9000 Zombies!Released: February 25, 2015Developer: Loren Lemcke
- TallowmereReleased: March 3, 2015Platforms: Microsoft Windows, macOS, Linux, Wii U
- Dustoff Heli RescueReleased: March 6, 2015Developer: Invictus Games
- Hotline Miami 2: Wrong NumberReleased: March 10, 2015Developer: Dennaton Games
- Chicken Invaders 5Released: March 13, 2015Developer: InterAction studios
- Trapped Dead: LockdownReleased: March 20, 2015Publisher: Headup Games
- Red LakeReleased: March 25, 2015Platforms: Microsoft Windows
- Deception IV: Another PrincessReleased: March 26, 2015Developer: Koei Tecmo Holdings
- KeeblesReleased: March 27, 2015Publisher: Green Man Gaming Publishing
- Pixel Puzzles 2: AnimeReleased: March 27, 2015Platforms: Microsoft Windows
- WarioWare: Touched!Released: April 1, 2015Developer: Intelligent Systems, Nintendo Software Planning & Development
- Space MarshalsReleased: April 10, 2015Developer: Pixelbite
- ManaCollectReleased: April 17, 2015Publisher: Fruitbat Factory
- The Curse of Nordic CoveReleased: April 23, 2015Platforms: Microsoft Windows, macOS, Linux
- The Lost Battalion: All Out WarfareReleased: April 23, 2015Publisher: My Way Games
- Son of NorReleased: April 27, 2015Developer: Stillalive studios
- VerdunReleased: April 28, 2015Developer: BlackMill Games, M2H
- Sky ForceReleased: April 29, 2015Developer: Infinite Dreams
- Abyss Raiders: UnchartedReleased: April 30, 2015Platforms: Microsoft Windows
- Block N LoadReleased: April 30, 2015Developer: Jagex
- Aces of the LuftwaffeReleased: May 6, 2015Developer: THQ Nordic Mobile
- High StrangenessReleased: May 6, 2015Platforms: Microsoft Windows, macOS, Linux, Wii U
- Johnny DynamiteReleased: May 7, 2015Platforms: Nintendo 3DS
- Thundering SkiesReleased: May 12, 2015Engine: Cocos2d-x
- Moonbase 332Released: May 20, 2015Platforms: Microsoft Windows
- BlockstormReleased: May 21, 2015Platforms: Microsoft Windows, macOS, Linux
- PorcunipineReleased: May 21, 2015Developer: Big Green Pillow
- Swords & Soldiers IIReleased: May 21, 2015Developer: Ronimo Games
- Heroes of LootReleased: May 25, 2015Developer: Orange Pixel
- Chip's Challenge 2Released: May 28, 2015Platforms: Microsoft Windows
- Crash Drive 2Released: May 28, 2015Developer: BlackMill Games
- Flame OverReleased: May 28, 2015Platforms: Microsoft Windows
- Vektor WarsReleased: June 4, 2015Platforms: Microsoft Windows, Wii U
- Chicken Invaders 3Released: June 8, 2015Developer: InterAction studios
- NEO AQUARIUM: The King of CrustaceansReleased: June 8, 2015Publisher: Playism
- Tcheco in the Castle of LucioReleased: June 22, 2015Platforms: Microsoft Windows
- Tap Tap InfinityReleased: June 26, 2015Platforms: Microsoft Windows, macOS
- How To Survive: Third Person StandaloneReleased: July 2, 2015Publisher: 505 Games
- Girlfriend RescueReleased: July 10, 2015Developer: Aldorlea Games
- Choice ChamberReleased: July 16, 2015Engine: Adobe Flash
- No Time To Explain RemasteredReleased: July 17, 2015Platforms: Microsoft Windows, macOS, Linux
- Funk of TitansReleased: July 24, 2015Publisher: Merge Games
- Starchaser: Priestess of the Night SkyReleased: July 24, 2015Publisher: Playism
- Boneless ZombieReleased: July 27, 2015Developer: Zoo Corporation
- GalacideReleased: July 28, 2015Developer: Puny Human
- GynophobiaReleased: July 31, 2015Platforms: Microsoft Windows, macOS
- Princess Kaguya: Legend of the Moon WarriorReleased: August 4, 2015Developer: Zoo Corporation
- GunnheimReleased: August 10, 2015Platforms: Microsoft Windows, macOS, Linux
- UBERMOSHReleased: August 13, 2015Platforms: Microsoft Windows, Linux
- Bard’s GoldReleased: August 14, 2015Platforms: Microsoft Windows, macOS, PlayStation Vita, Linux
- SmiteReleased: August 19, 2015Developer: Hi-Rez Studios
- A Sirius GameReleased: August 21, 2015Publisher: Aldorlea Games
- Secret Of MagiaReleased: August 21, 2015Platforms: Microsoft Windows
- ShutshimiReleased: August 25, 2015Publisher: Choice Provisions
- Autobahn Police SimulatorReleased: August 26, 2015Developer: Z-Software
- Labyronia RPG 2Released: August 28, 2015Platforms: Microsoft Windows
- XenocideReleased: August 28, 2015Platforms: Microsoft Windows
- Exile’s EndReleased: August 31, 2015Platforms: Microsoft Windows, macOS, Linux
- IZBOTReleased: September 1, 2015Engine: GameMaker
- TinertiaReleased: September 3, 2015Platforms: Microsoft Windows, macOS, Linux
- Shmup Love BoomReleased: September 18, 2015Platforms: Microsoft Windows, macOS, Linux
- TowerClimbReleased: September 22, 2015Platforms: Microsoft Windows
- Game TypeReleased: September 23, 2015Developer: Mommy's Best Games
- Shoot 1UPReleased: September 23, 2015Developer: Mommy's Best Games
- Reverse CrawlReleased: September 24, 2015Developer: Nerdook Productions
- StraimaReleased: September 25, 2015Platforms: Microsoft Windows
- A.I. InvasionReleased: September 30, 2015Platforms: Microsoft Windows
- Pixel GalaxyReleased: October 2, 2015Platforms: Microsoft Windows, macOS
- Transformers: DevastationReleased: October 6, 2015Series: Transformers
- Legend of Mysteria RPGReleased: October 9, 2015Platforms: Microsoft Windows
- Orion TrailReleased: October 12, 2015Developer: Schell Games
- SkyscrappersReleased: October 15, 2015Developer: Ground Shatter
- CeresReleased: October 16, 2015Publisher: Iceberg Interactive
- Color Symphony 2Released: October 16, 2015Developer: REMIMORY
- Eternal StepReleased: October 16, 2015Publisher: Green Man Gaming Publishing
- PixelJunk Shooter UltimateReleased: October 21, 2015Publisher: Double Eleven
- Pink HourReleased: October 28, 2015Developer: Pixel Soft
- Pink HeavenReleased: November 4, 2015Developer: Pixel Soft
- Birth of ShadowsReleased: November 5, 2015Platforms: Microsoft Windows
- ClandestineReleased: November 5, 2015Developer: Logic Artists
- Knight SquadReleased: November 16, 2015Platforms: Microsoft Windows, macOS, Linux
- ROOTReleased: November 16, 2015Developer: Skunkape Interactive
- Shadow Ninja: ApocalypseReleased: November 16, 2015Developer: Boogygames Studios
- Yohjo SimulatorReleased: November 17, 2015Publisher: Sekai Project
- Corgi WarlockReleased: December 3, 2015Platforms: Microsoft Windows
- Steel RainReleased: December 3, 2015Platforms: Microsoft Windows, Linux
- Castle ChaosReleased: December 8, 2015Platforms: Microsoft Windows, macOS, Linux
- Reverse x ReverseReleased: December 10, 2015Publisher: Sekai Project
- Avaris 2: The Return of the EmpressReleased: December 15, 2015Publisher: Zoo Corporation
- TurokReleased: December 17, 2015Series: Turok
- LightriseReleased: December 21, 2015Platforms: Microsoft Windows
- Solitaire Christmas. Match 2 CardsReleased: December 24, 2015Developer: Creobit