In this paper we present a new version of Chaos Many-Body Engine (CMBE) Grossu et al. (2014) [1]. Inspired by the Mean Free Path concept, we implemented a new parameter, namely the “Mean Free Time”, which is defined as the mean time between one particle’s creation and its stimulated decay. This new parameter should be understood as an effect of the nuclear environment and, as opposed to the particle lifetime, it has the advantage of not being affected by the relativistic dilation. In [2] we presented a toy-model for chaos analysis of relativistic nuclear collisions at 4.5 A GeV/c (the SKM 200 collaboration). In this work, we extended our model to 200 A GeV (the maximum BNL energy). New version program summaryProgram title: Chaos Many-Body Engine v05Catalogue identifier: AEGH_v5_0Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEGH_v5_0.htmlProgram obtainable from: CPC Program Library, Queen’s University, Belfast, N. IrelandLicensing provisions: Microsoft Public License (Ms-PL)No. of lines in distributed program, including test data, etc.: 638984No. of bytes in distributed program, including test data, etc.: 15918340Distribution format: tar.gzProgramming language: Visual C# .Net 2010Computer: PCOperating system: .Net Framework 4.0 running on MS WindowsRAM: 128 MBClassification: 24.60.Lz, 05.45.aCatalogue identifier of previous version: AEGH_v4_0Journal reference of previous version: Computer Physics Communications 185 (2014) 1339Does the new version supersede the previous version?: YesNature of problem: Toy-model for relativistic nuclear collisions at present BNL energies.Solution method: Relativistic many-body OOP engine, including a reactions module.Reasons for new version:1.Implementation of the “Mean Free Time” parameter;2.Implementation of a new example of use for relativistic nuclear collisions at present BNL energies.Summary of revisions:1.Implementation of a new parameter, namely the “Mean Free Time”, defined as the mean time between one particle’s creation and its stimulated decay. The Mean Free Time should be understood as an effect of the nuclear environment and, as opposed to the particle lifetime, it is measured in the observation system (not affected by the relativistic dilation). Following this purpose, a new tag (MeanFreeTime) was added in the “Particles” section of the specific XML reactions input file described in [2].2.Analysis ∖Chaos Analysis ∖Double ∖Other: Implementation of a, more reliable, fuzzy algorithm [3] for probability distributions.3.Math ∖Vector ∖GetRandomVector: Bug correction (the distribution is now isotropic).4.Simulations ∖Collider: New example of use for relativistic nuclear collisions at present BNL energies [4].Additional comments:Inspired by existing nuclear billiards [5,6], in [2] we implemented a toy-model for relativistic nuclear collisions at 4.5 A GeV/c (the SKM 200 collaboration [7,8]). In this work, we extended our model to higher energies. Following this purpose, we inherited the SimulationCollisionExample class (the SimulationColliderExample class), and employed an extended set of reactions (the ColliderReactions.xml file). The, previously discussed, Mean Free Time concept is also playing an important role in this context. As an exemplification of CMBE capabilities, in Figs. 1–3 we present some preliminary results [9] for 1000 Au–Au events at 200 A GeV (the maximum BNL energy [4]), simulated at 0.1 Fm/c temporal resolution. [Display omitted] [Display omitted] [Display omitted]