> That's more or less the entirety of a game's output. Output is only a very small subset of a game. You need stuff like UI layout or Scene graph with transiti

> That's more or less the entirety of a game's output. Output is only a very small subset of a game. You need stuff like UI layout or Scene graph with transitions, tweening, texture atlases handling, animation, etc. A good game engine like Unity or libGDX provides all that without a game programmer having to reinvent the wheel. See for example a list of classes the libGDX API provides: https://libgdx.badlogicgames.com/ci/nightlies/docs/api/ https://libgdx.badlogicgames.com/ci/nightlies/docs/api/