This definition is too trivial and vague that it doesn't capture any useful notion of incremental.
IMO the core aspect of incremental games is incremental accumulation of resources. The whole game is centered around accumulating such resources, using them to overcome challenges, and accumulating more of them. These resources are usually persistent, but exchanging some of them for another type (like prestiging) is also possible.
In contrast, a puzzle game is trying to solve a problem within clear boundaries. In this game, when trying to beat the final boss, there's a clear boundary: time limit and batteries avaliable.