Contralogic has released Value Synth, a simple freeware synth made with SynthEdit.
It was inspired by B3TA’s Doctor When (Tesco Value Top Trumps Cards).
There are 8 parameters, but they’re not labeled so just fiddle around a bit to find out what each parameter does (hint, 8 seems to be the volume). The Quality Guaranteed button also does something…
You can download Value Synth here.