Is it possible to create such a game in pure JS without using an engine?

Question

JavaScript

Is it actually possible to create this game in pure JS (canvas) without using game engines? arrow control
game

Answer 1

The game engines themselves are written in pure js, so yes

Answer 2

Everything is allowed

Answer 3

It is possible, but why the hemorrhagic? Engines are good because they give freedom to creativity, and not the invention of bicycles. In addition, if game levels are supposed to be saturated with objects, then you need to place them somewhere, i.e. You can't do without a level editor.
This, of course, depends on the task. For 2D I would choose Pixi.js , for a serious 3D project Blend4Web . If you dig deeper, then there are more for every taste.