Und noch etwas:

„Generally, gameplay is considered to be the overall experience of playing a video game excluding factors like graphics and sound. Game mechanics, on the other hand, is the sets of rules in a game that are intended to produce an enjoyable gaming experience. Academic discussions tend to favor terms like game mechanics specifically to avoid gameplay since the latter term is too vague.“
Also: Spielmechaniken != Gameplay. Ihr redet hier aber hauptsächlich über die Mechaniken.