Your Mac reacts to you. Loudly, and with any sound you like.
PlugMac
Your Mac screams when you unplug it.
€3.99
SmackBook
Slap your MacBook. It slaps back.
The OG Trio
The three that started it.
€6.99 €11.97 if bought separately
Pick any apps. The more you add, the less each costs.