Game Engines And Their Games:
Game Engine: Source Engine
Games: Dota 2, Half Life 2 series, Counter-Strike: Source, Counter-Strike: Global Offensive, Left4Dead, Left4Dead 2, Portal 1 and 2
Game Engine: Glacier 2
Game: Hitman Absolution
Game Engine: FrostBite 2
Game: Battlefield: Bad Company 2, Battlefield 3, Need for Speed: The Run
Game Engine: Unreal Engine
Games: Mass Effect Series, Dishonored, Bioshock Infinite, Batman: Arkham Asylum and City and hundreds more
Game Engine: CryEngine 3
Game: Crysis 2 and 3
When looking for key features for Game Engines I found some great information from https://en.wikipedia.org/wiki/Unity_(game_engine) as I struggled to gather some of my own sources. However, I have took what i thought was the key information and abbreviated it slightly.
Key Features of Unity:
Unity allows specification of texture compression and resolution settings for each platform that the game engine supports, and provides support for bump mapping, reflection mapping, parallax mapping, screen space ambient occlusion (SSAO), dynamic shadows using shadow maps, render-to-texture and full-screen post-processing effects. Unity’s graphics engine’s platform diversity can provide a shader with multiple variants and a declarative fallback specification, allowing Unity to detect the best variant for the current video hardware and, if none are compatible, to fall back to an alternative shader that may sacrifice features for performance.
Unity is notable for its ability to target games to multiple platforms. Within a project, developers have control over delivery to mobile devices, web browsers, desktops, and consoles. Supported platforms include Android, Apple TV, BlackBerry 10, iOS, Linux, Nintendo 3DS line, OS X, PlayStation 3, PlayStation 4, PlayStation Vita, Unity Web Player (including Facebook), Wii, Wii U, Windows Phone 8, Windows, Xbox 360, and Xbox One. It includes an asset server and Nvidia’sPhysX physics engine. Unity Web Player is a browser plugin that is supported in Windows and OS X only.
When looking for the key features of Unreal Engine 4 their website made it very easy for me, having a video that shows all of the Software’s best parts.