I guess the use of the word 'elements' in context of a 'sciency' game (or at least a thread that recommend a game for sciency kids) sort of implies that elements is meant in a science way. And then the four initial 'elements' are those we know from classics, which is a bit jarring; and all further elements are not really 'elements' in any science meaning at all.
But I don't think there is anything wrong in using 'elements' in the everyday use version of (roughly) 'parts of a whole': There are certain essential elements to every well functioning work place.... elements that contribute to being successful are... A village is constituted by the following elements...
I think the game plays with the term, but also points out that anything that is the result of certain sub-parts, can also itself be a part contributing to a different whole. So a beach is made up of certain things, things that are essential to it being a beach. There might be non-essential things too but they don't count. So, sand or pebbles or stones, a gentle gradient, water. But a beach is also an essential part of other things, e.g. a 'beach resort'.
The science aspect of the game has decidedly little to do with the chemistry elements, but that does not mean there is no sound science in the game.