Adding separate title in the Appendix environment

Question

I would like to add the title of a document that is an appendix. How can I do it? If I run this code, the title is not displayed.

\documentclass[10 pt,a4paper,oneside,openany]{article}
\begin{document}
\title{Title\footnote{Disclaimer.}}
\author{XX\thanks{University.}}
\begin{appendix}
\section{The game}
\label{unilateral}
blah
\end{appendix}
\end{document}