Although the Lenovo IdeaPad 3 15 Laptop, model number 81W1018XUS, does not ship with a built in CD/DVD drive, you can use an external, USB-based Windows 10 compatible CD/DVD drive with this laptop, like this one: https://www.bestbuy.com/site/lg-8x-external-usb-double-layer-dvdrw-cd-rw-drive-black/5852919.p?skuId=5852919

That will depend on the requirements and compatibility of the specific games you want to play. The Lenovo IdeaPad 3 14 Laptop, model number 81W000NGUS, ships with Windows 10 S-Mode 64-bit Operating System. Windows 10 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 10 Home 64-bit Operating System, at no additional cost. We recommend you check with the specific game's software publisher's web sites, of the games you want to play, for their compatibility with Windows 10 S-Mode 64-bit operating system and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration. If you choosing to switch out of S-Mode for Windows 10 Home, here is a link to instructions for switching from Windows 10 S-Mode to Windows 10 Home: https://support.microsoft.com/en-us/help/4456067/windows-10-switch-out-of-s-mode

The Lenovo Chromebook 3 11 model number 82H40000US, ships with a 720p (HD) webcam and microphone built in.

You can use any universal 14 inch or larger laptop case.