This is already answered in this forum post but to go into further detail, an “engine” is simply code that runs a game, so it’s impossible to create a game without an engine. If you’re using a framework or library instead, it simply means you’re creating your own game engine, however simple. So, yes.
Typically the word “engine” is only used when the framework includes a scene graph and development tools. PyGame has neither, so it’s a library, which is what they call it on their website.
