[someexgamedev]

Game engines live or die based on how they adapt to the constantly changing landscape. Unity made sense of the mobile landscape first and that led to their ascendancy. With mobile gaming on the decline and a looming new console generation, Unity will be put to the test.

Even when game engines don't fail themselves, they can become obsolete. As a general rule: love no language, engine or platform. They all come and go over the span of a career and that's especially true in an industry like gaming which constantly sits at the bleeding edge.

Some of Unity's innovations like the asset store will endure no matter what engine is on top. But the next iteration will probably just look more like a package manager.

[pjmlp]

The only thing on the decline, are thankfully crap game clones with monetization for each click.