What programming language need to study to create a game, such as in example. (link)

Question

Want to try to start a project of creating game, I am not in hurry and understand, that I need to study many information for this. From programming I have just a basic understanding of Pascal and very bit of html.
So what and how should I start my solo studying?
Want to create something like this: (ATTENTION, THAT'S MAY LOOK LIKE AN ADD, BUT THAT DOESN'T, SRY FOR THIS, DONT KNOW BETTER EXAMPLE TO SHOW MY PLANS) @ArenaGameTelegramBot. Maybe as bot, maybe as browser game, maybe as an app, idk, how will be better and easier...
Hope for understanding me and help. Thanks.

Answer 1

There are some options:
Game engines like Godot that allow you to export to web. GdScript is quite different from Pascal, but not too hard to transition.
Develop on web game engine. You will have to learn javascript or one of its transpilable cousins.
Do it on C, C++, perhaps Rust. The game will be most optimized and faster this way, but this option is much, much slower, harder and error prone. You would essentially have to make your own engine AND the game, yet you also would have to work around all the obscure details of different platforms, while for existing game engines there are people who have done it for you.

Answer 2

If you want to make games go for C++ and C#.