Here is the thumbnail I made with the help of canva.com You can save it by right clicking on the image and then click the button "Save image as" after that save it where you want. Thanks a lot (Please don't forget to credit me!)
https://www.canva.com/design/DAEikB9nG6A/7A7cSrK-pnDK8K1-jOEjhA/view?utm_content=DAEikB9nG6A&utm_campaign=designshare&utm_medium=link&utm_source=sharebutton - Link for the thumbnail for old era games
