Reactions User Guide



Download Windows Installer
Installation Instructions

System Requirements

  • Windows 8.1 or later
  • Cinema 4D integration requires R20 through R23
  • 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.


  • [Cache] Avoid GPU/CPU memory round trip when rendering from cache on CPU.
  • [Examples] Fixed broken particle_voxelization example.
  • [Framework] Fixed crash on startup if aliased node file is missing.
  • [Nodes] Decay node parameter UI did not update correctly.
  • [Rake] Extended compile-time evaluation to all unary and binary operators.
  • [Rake] Support compile-time string comparison.
  • [Templates] Explosion: reduced size to 25%.
  • [UI] Fixed crash when changing some item names in C4D while REA UI is open.
  • [Viewport] Fixed incorrect scale dependence of volume shader.
  • [VolumeMaterial] Made effective opacity independent of voxel size.