diff --git a/CaseStudies/gamephys/docs/SRS/GamePhysicsSRS.pdf b/CaseStudies/gamephys/docs/SRS/GamePhysicsSRS.pdf
index 7718b9d7..200ec9dd 100644
Binary files a/CaseStudies/gamephys/docs/SRS/GamePhysicsSRS.pdf and b/CaseStudies/gamephys/docs/SRS/GamePhysicsSRS.pdf differ
diff --git a/CaseStudies/gamephys/docs/SRS/GamePhysicsSRS.tex b/CaseStudies/gamephys/docs/SRS/GamePhysicsSRS.tex
index 94bdea13..292b00b4 100644
--- a/CaseStudies/gamephys/docs/SRS/GamePhysicsSRS.tex
+++ b/CaseStudies/gamephys/docs/SRS/GamePhysicsSRS.tex
@@ -65,6 +65,8 @@
 \newcounter{reqnum} %Requirement Number
 \newcommand{\rthereqnum}{P\thereqnum}
 \newcommand{\rref}[1]{R\ref{#1}}
+\newcounter{nfrnum} %Nonfunctional Requirement Number
+\newcommand{\nfrref}[1]{NFR\ref{#1}}
 \newcounter{lcnum} %Likely change number
 \newcommand{\lthelcnum}{LC\thelcnum}
 \newcommand{\lcref}[1]{LC\ref{#1}}
@@ -1464,6 +1466,44 @@ \subsection{Nonfunctional Requirements}
 Other non-functional requirements that are a priority are: correctness,
 understandability, portability, reliability, and maintainability. 
 
+\subsubsection{Performance Requirements}
+
+\begin{itemize}
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_ComputationTime}:] Calculate a step of the simulation involving 1000 rigid bodies in no more than $\frac{1}{60}s$ on minimum hardware (\nfrref{NFR_MinimumRequirements}).
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_ComputationMemory}:] Consume no more than 200 megabytes of memory at any point during the simulation.
+\end{itemize}
+
+\subsubsection{Understandability Requirements}
+
+\begin{itemize}
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_APIDocumentation}:] Provide interface documentation generated from the code.
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_Examples}:] Include documentation with examples demonstrating use of the system.
+\end{itemize}
+
+\subsubsection{Portability Requirements}
+
+\begin{itemize}
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_DesktopOS}:] Run on desktop operating systems Windows, macOS, and Linux.
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_MobileOS}:] Run on mobile operating systems iOS and Android.
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_GameConsoles}:] Run on the Nintendo Wii game console.
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_LanguageCompatibility}:] Provide a C99-compatible\cite{C99ISO} interface.
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_MinimumRequirements}:] Meet \nfrref{NFR_ComputationTime} on a dual-core 1.5 gigahertz processor with 2 gigabytes of memory available.
+\end{itemize}
+
+\subsubsection{Reliability Requirements}
+
+\begin{itemize}
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_CrashAdverse}:] No step of the simulation should cause the calling program to terminate while executing inside the library.
+\end{itemize}
+
+\subsubsection{Maintainability Requirements}
+
+\begin{itemize}
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_CleanCode}:] Produce no warning messages when building the package.
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_UniformCode}:] Adhere to a consistent code formatting style.
+\item[NFR\refstepcounter{nfrnum}\thenfrnum \label{NFR_PredictableCode}:] Adhere to the language formatting guide if one exists.
+\end{itemize}
+
 
 %%%%%%%%%%%%%%%%%%%%%%%%
 %
diff --git a/CaseStudies/gamephys/docs/SRS/README.md b/CaseStudies/gamephys/docs/SRS/README.md
index aed4e912..f76a0d3a 100644
--- a/CaseStudies/gamephys/docs/SRS/README.md
+++ b/CaseStudies/gamephys/docs/SRS/README.md
@@ -4,6 +4,9 @@ Software Requirements Specification (SRS)
 Revision Notes
 --------------
 
+**05/09/2018**
+- Expanded nonfunctional requirements to include what some may be instead just the priority of certain categories of nonfunctional requirements.
+
 **07/06/2016**
 - Tidied up the formatting of models and definitions to make it more readable and similar to other SRSs.
 - Changed goal statements and the corresponding instance models quite a bit.
diff --git a/CaseStudies/gamephys/refs/Physics_Game_Library.bib b/CaseStudies/gamephys/refs/Physics_Game_Library.bib
index acfd637c..9a72b31e 100644
--- a/CaseStudies/gamephys/refs/Physics_Game_Library.bib
+++ b/CaseStudies/gamephys/refs/Physics_Game_Library.bib
@@ -107,3 +107,10 @@ @book{Bueche1986
 	Publisher = {McGraw Hill},
 	Title = {Introduction to Physics for Scientists},
 	Year = {1986}}
+
+@techreport{C99ISO,
+	Author = {ISO},
+	Institution = {International Organization of Standards},
+	Month = {December},
+	Title = {ISO/IEC 9899:1999 - Programming Languages -- C},
+	Year = {1999}}