How to show 2 html game at same time in one page?

I want to combine two html games, both running on the same page at the same time. But whatever I try, only the canvas of a one game appears on the screen (I tried ways like iframe, open local html, etc., but it didn't work)

I think I need to edit the html codes to allow another html game to run inside them. How do I do this?

(One game is made by construct, another game is made with another software)

for another game you can host game into server (netlify,firebase,etc)

and generate link

paste into iframe and try it

note -

both game controls are same

But I run the games locally without the need for a server (with Webvivo)

Thankful. Can you help me if I send you the folder containing both games? It is not heavy size