Reactions User Guide



Download Windows Installer
Installation Instructions

System Requirements

  • Windows 8.1 or later
  • Cinema 4D integration requires R20 or later
  • GPU simulation requires an Nvidia GPU with CUDA CC 3.5 or later (see
  • Redshift integration in standalone app requires Redshift v3.0.36.
    Redshift in C4D is unaffected by this requirement.


  • [DFG] Show error messages only on the first node that encounters an error.
  • [DFG] Reorganized node classes by geometry type.
  • [DFG] Fixed crash when connecting empty bundle ports to some nodes.
  • [Particles] Extended default solver to support optional force and mass attributes.
  • [Particles] Added Drag And Wind node.
  • [Rake] Added pre-compilation.
  • [Rake] Added @group attribute to control parameter UI grouping.
  • [Templates] Advection was inactive in Particles Through Curl Noise.
  • [Templates] Added Flame Thrower.
  • [UI] Fixed: CodeEditor was generating diagnostics even when invisible.
  • [UI] Fixed: EnumWidget did not handle undo to uninitialized state correctly.
  • [UI] Auto-activate fibers when creating a connecting to a bundle port interactively.
  • [UI] NodeSelector did not load icons of external nodes.
  • [UI] Per-channel or per-fiber parameter sets were not re-used after re-connecting a port.
  • [UI] Splitter bar did not drag correctly in some cases.
  • [UI] Mouse cursors were not changed/restored correctly wrt. mouse grabbing.
  • [Undo] Support undo augmentation for observers of dependent models.
  • [Viewport] Fixed framerate drop after graph edits during playback.
  • [Volumes] Use Rake backend for Decay.
  • [Volumes] Added per-channel parameters to Decay.