|The card's front face||The card's back face|
|The progressive sophistication of sound related performative actions.|
Developing the PC's abilities step-by-step is a common practice in games. It allows the adaptation to a complex set of rules and/or controls, in a methodical way. In that sense this pattern does not add novelty to the "general approach". Still, sound designers have to ponder the need for such levelling, and eventually to design it considering the specificities of the sound explorations that they propose.
Levelled Performance can also serve the goal of managing the players' interest in the game by extending the delivery of novelty along the experience. Again, this is not particular to sound design, but it is something sound designers may also wish/need to consider.