Frogplays is a VST plugin designed for mastering use. With almost uncanny accuracy, it emulates the sound of your track being played at a large festival by an over-enthusiastic DJ. Who happens, in this case, to be a frog. It seems to have been designed by German coders Prodyon. [Download]. While we're here, it's probably only right to link to PSP Flight, the world's first (and only) VST game, designed so long ago that it's a bit too fast to actually play on my PC.