If a game is set to run in full-screen mode, when you alt+tab out the game, it will stop rendering. This means that you will not see the game in OBS while it is minimized. Either make a test recording and check it to verify the capture worked properly, or move OBS to a second monitor if you have one.
Game capture will only capture what is displaying for a game, so if you play a game in windowed mode it will ignore your desktop or other windows. Display capture will record everything on a single monitor, games, desktop, browser you name it.
OBS Studio is an open source Windows 10 screen recorder software designed for live streaming and video recording. It offers more tools compared to the Xbox Game Bar such as video editing, customizable transitions, and much more so you can tinker on different aspects of your recording.
Open Broadcaster Software (OBS) Studio is a streaming solution for Windows, that can be used with Elgato Game Capture HD hardware. It is free, open source software for live streaming and recording.
Roxio game capture tool can be used to record high quality video and audio footage from game play that is working on any system like PS4, PS3, Xbox One and Xbox 360 etc. It supports video recording at 1080p resolution level and assists in easy recording even when users are playing their Full HD content on TV.