SoyBoy SP is a VST3 instrument plugin to generate some GameBoy-like sounds. It has some basic features below:

- Three oscillator modes (square wave, noise, wavetable)
- A 32-samples 4bit wavetable oscillator
- A linear envelope generator
- A frequency sweeping to bend the pitch automatically
- A stutter, it's like a note delay

Additionally, SoyBoy SP has these features:

- Can be polyphonic; you can choose a number of voices (1 ~ 6)
- Pitch bending with MPE (MIDI Polyphonic Expression)