SPOTMisc is on CRAN

SPOTMisc (source package) is on CRAN:

[SPOTMisc] implements additional models, simulation tools, and
  interfaces as extensions to ‘SPOT‘. It provides tools for
  interfacing ‘mlr‘, for performing Markov chain simulations,
  and for sensitivity analysis based on sequential bifurcation
  methods as described in Bettonvil and Kleijnen (1997).
  Furthermore, additional plotting functions for output from
  ‘SPOT‘ runs are implemented. 

Bettonvil, B., and Kleijnen (1997), J. P. Searching for important factors in simulation models with many factors: Sequential bifurcation. European Journal of Operational Research 96, 1 (1997), 180–194.