GameSynth 2023.1 just got released, and it is 30% off in June (with lifetime free updates).

http://tsugi-studio.com/web/en/products-gamesynth.html​

GameSynth uses the latest advances in procedural audio to help you design high-quality sound effects.

It offers many unique features aimed at game, animation, and movie production:

• specialized synthesizers for all common types of sound effects
• a patching environment with 130+ synthesis modules
• a sketch pad for drawing sounds with a mouse or tablet
• the automatic generation of sound variations
• built-in integrations with the leading industry tools for games and animations
• an API to communicate with any other creative tools (Unity, Blender, Wwise, Reaper, etc…)
• the import of animation curves to create perfectly matching sounds
• synchronized video playback
• the largest collection of procedural patches available
• 100+ procedural sound design tutorials and many other resources