Hi, Ricky! As for your question, I think you’d better choose a screen video recorder that is able to create Picture-in-Picture videos. A Picture-in-Picture (PIP) video refers to a main video with a small video embedded in (usually a web camera recording). This kind of video is widely used in teaching tutorials or similar demos that aim at making viewers understand much better.

Nowadays, there is lots of screen recording software that can record camera videos with good quality. However, it cannot record the screen and web camera simultaneously. As far as I know, Camtasia that is regarded as the world-class video recorder can make Picture-in-Picture videos. However, its latest version needs the cost of $299. Another one is Apowersoft Free Online Screen Recorder that can also make Picture-in-Picture videos with ease and it’s free.
In view of the price and other factors, you can choose Apowersoft Online Screen Recorder to record yourself and video games at the same time. It supports to record HD videos in different modes like Region, Full Screen, Web Camera, Around Mouse and Only Audio. Thus, you can record video games and your own face via camera. You said that you also want to record your own commentary when you record the game, I think this screen recorder would do you a favor.
You can follow the steps below to make it:
First, you should enter here and click Start Recording button to get this free screen recorder. It will pop up in no time.

Before recording, you can choose Microphone as your Audio Input to record your commentary.

Then choose Region to record. You can customize any part of screen you want to record.

During recording, click camera icon in recording tool bar to record your own facial gestures.

Well, if you got accustomed to using hotkeys, you can preset your favorite hotkeys in Options tab under Tools menu. Hope it can help you. 