If you haven't yet, I would look into Unity. You can write scripts in C# and it comes with a ton of functionality out of the box. Unity can output webgl and if

If you haven't yet, I would look into Unity. You can write scripts in C# and it comes with a ton of functionality out of the box. Unity can output webgl and if you release the game and it is successful, it is generally quite easy to release mobile versions without much work. I've been working with Unity for years, feel free to ask any questions you have!