\documentclass[tikz,border=10pt]{standalone}
                        \IfFileExists{newpxtext.sty}{\usepackage{newpxtext,newpxmath}}{}
                        \linespread{1.10}
                        \usetikzlibrary{shapes}
                        \usetikzlibrary{arrows.meta}
                        \usepackage{graphicx}

                        \begin{document}

                        % TikZ code with built-in styling for game trees
% TikZ libraries required for game trees
\usetikzlibrary{shapes}
\usetikzlibrary{arrows.meta}

% Style settings for game tree formatting
\tikzset{
    every node/.append style={font=\sffamily\itshape},
    every text node part/.append style={align=center},
    node distance=1.5mm,
    thick
}

% Built-in macro definitions for game tree drawing
\newdimen\ndiam
\ndiam1.5mm
\newdimen\sqwidth
\sqwidth1.6mm
\newdimen\spx
\spx.7mm
\newdimen\spy
\spy.5mm
\newdimen\paydown
\paydown2.5ex
\newdimen\treethickn
\treethickn1.0pt
\definecolor{chancecolor}{RGB}{117,145,56}
\definecolor{playeronecolor}{RGB}{234,51,35}
\colorlet{playertwocolor}{blue}
\colorlet{playerthreecolor}{orange}
\colorlet{playerfourcolor}{purple}
\colorlet{playerfivecolor}{cyan}
\colorlet{playersixcolor}{magenta}

% Game tree content from /home/docs/checkouts/readthedocs.org/user_builds/gambitproject/checkouts/829/catalog/img/jakobsen2016/fig3.ef
\begin{tikzpicture}[scale=0.8
  , StealthFill/.tip={Stealth[line width=.7pt,inset=0pt,length=13pt,angle'=30]}]
% \draw [help lines, color=green] (-5,0) grid (5,-6);
\draw [line width=\treethickn,color=playertwocolor] (-8.824,-1.669) arc(61.9:241.9:0.375)
  -- (-1.676,-6.331) arc(-118.1:61.9:0.375) -- cycle;
\draw [line width=\treethickn,color=playeronecolor] (-7.588,-5.636) arc(103.6:283.6:0.375)
  -- (9.088,-2.364) arc(-76.4:103.6:0.375) -- cycle;
\draw [line width=\treethickn,color=playerthreecolor] (-2.824,-1.669) arc(61.9:241.9:0.375)
  -- (4.324,-6.331) arc(-118.1:61.9:0.375) -- cycle;
\draw [line width=\treethickn,color=playerfourcolor] (3.176,-1.669) arc(61.9:241.9:0.375)
  -- (10.324,-6.331) arc(-118.1:61.9:0.375) -- cycle;
%% player 1 name Player~1
\def\playerone{Player~1}
%% player 2 name Player~2
\def\playertwo{Player~2}
%% player 3 name Player~3
\def\playerthree{Player~3}
%% player 4 name Player~4
\def\playerfour{Player~4}
%% level -2.0 node 1 player 0
\def\playerzero{Chance}
\draw [line width=\treethickn] (0,2)
   ;
%% level 2.0 node 1 xshift -9.0 from -2.0,1 move 0~(\frac{1}{4})
\draw [line width=\treethickn,color=chancecolor] (-9,-2)
   -- (0,2);
\draw (-4.5,0) node[left,xshift=-1mm,color=chancecolor] {0~($\frac{1}{4}$)\strut};
%% level 10.0 node 1 xshift -1.5 from 2.0,1 move 1 payoffs 0 0 0 0
\draw [line width=\treethickn,color=playertwocolor] (-10.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (-9,-2);
\draw (-9.75,-6) node[left,xshift=-0.5mm,color=playertwocolor] {1\strut};
%% level 6.0 node 1 xshift 1.5 from 2.0,1 move 2
\draw [line width=\treethickn,color=playertwocolor] (-7.5,-6)
   -- (-9,-2);
\draw (-8.25,-4) node[right,xshift=0.5mm,color=playertwocolor] {2\strut};
%% level 10.0 node 2 xshift -1.0 from 6.0,1 move 1 payoffs 0 0 0 0
\draw [line width=\treethickn,color=playeronecolor] (-8.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (-7.5,-6);
\draw (-8,-8) node[left,xshift=-0.5mm,color=playeronecolor] {1\strut};
%% level 10.0 node 3 xshift 1.0 from 6.0,1 move 2 payoffs 1.01 -1 0 0
\draw [line width=\treethickn,color=playeronecolor] (-6.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{1.01}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{-1{\phantom-}}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (-7.5,-6);
\draw (-7,-8) node[right,xshift=0.5mm,color=playeronecolor] {2\strut};
%% level 2.0 node 2 xshift -3.0 from -2.0,1 move 1~(\frac{1}{4})
\draw [line width=\treethickn,color=chancecolor] (-3,-2)
   -- (0,2);
\draw (-1.5,0) node[left,xshift=-1mm,color=chancecolor] {1~($\frac{1}{4}$)\strut};
%% level 10.0 node 4 xshift -1.5 from 2.0,2 move 1 payoffs 0 0 0 0
\draw [line width=\treethickn,color=playerthreecolor] (-4.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (-3,-2);
\draw (-3.75,-6) node[left,xshift=-0.5mm,color=playerthreecolor] {1\strut};
%% level 6.0 node 2 xshift 1.5 from 2.0,2 move 2
\draw [line width=\treethickn,color=playerthreecolor] (-1.5,-6)
   -- (-3,-2);
\draw (-2.25,-4) node[right,xshift=0.5mm,color=playerthreecolor] {2\strut};
%% level 10.0 node 5 xshift -1.0 from 6.0,2 move 1 payoffs 0 0 0 0
\draw [line width=\treethickn,color=playertwocolor] (-2.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (-1.5,-6);
\draw (-2,-8) node[left,xshift=-0.5mm,color=playertwocolor] {1\strut};
%% level 10.0 node 6 xshift 1.0 from 6.0,2 move 2 payoffs 0 1.01 -1 0
\draw [line width=\treethickn,color=playertwocolor] (-0.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{1.01}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{-1{\phantom-}}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (-1.5,-6);
\draw (-1,-8) node[right,xshift=0.5mm,color=playertwocolor] {2\strut};
%% level 2.0 node 3 xshift 3.0 from -2.0,1 move 2~(\frac{1}{4})
\draw [line width=\treethickn,color=chancecolor] (3,-2)
   -- (0,2);
\draw (1.5,0) node[right,xshift=1mm,color=chancecolor] {2~($\frac{1}{4}$)\strut};
%% level 10.0 node 7 xshift -1.5 from 2.0,3 move 1 payoffs 0 0 0 0
\draw [line width=\treethickn,color=playerfourcolor] (1.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (3,-2);
\draw (2.25,-6) node[left,xshift=-0.5mm,color=playerfourcolor] {1\strut};
%% level 6.0 node 3 xshift 1.5 from 2.0,3 move 2
\draw [line width=\treethickn,color=playerfourcolor] (4.5,-6)
   -- (3,-2);
\draw (3.75,-4) node[right,xshift=0.5mm,color=playerfourcolor] {2\strut};
%% level 10.0 node 8 xshift -1.0 from 6.0,3 move 1 payoffs 0 0 0 0
\draw [line width=\treethickn,color=playerthreecolor] (3.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (4.5,-6);
\draw (4,-8) node[left,xshift=-0.5mm,color=playerthreecolor] {1\strut};
%% level 10.0 node 9 xshift 1.0 from 6.0,3 move 2 payoffs 0 0 1.01 -1
\draw [line width=\treethickn,color=playerthreecolor] (5.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{1.01}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{-1{\phantom-}}\strut$}
   -- (4.5,-6);
\draw (5,-8) node[right,xshift=0.5mm,color=playerthreecolor] {2\strut};
%% level 2.0 node 4 xshift 9.0 from -2.0,1 move 3~(\frac{1}{4})
\draw [line width=\treethickn,color=chancecolor] (9,-2)
   -- (0,2);
\draw (4.5,0) node[right,xshift=1mm,color=chancecolor] {3~($\frac{1}{4}$)\strut};
%% level 10.0 node 10 xshift -1.5 from 2.0,4 move 1 payoffs 0 0 0 0
\draw [line width=\treethickn,color=playeronecolor] (7.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (9,-2);
\draw (8.25,-6) node[left,xshift=-0.5mm,color=playeronecolor] {1\strut};
%% level 6.0 node 4 xshift 1.5 from 2.0,4 move 2
\draw [line width=\treethickn,color=playeronecolor] (10.5,-6)
   -- (9,-2);
\draw (9.75,-4) node[right,xshift=0.5mm,color=playeronecolor] {2\strut};
%% level 10.0 node 11 xshift -1.0 from 6.0,4 move 1 payoffs 0 0 0 0
\draw [line width=\treethickn,color=playerfourcolor] (9.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{0}\strut$}
   -- (10.5,-6);
\draw (10,-8) node[left,xshift=-0.5mm,color=playerfourcolor] {1\strut};
%% level 10.0 node 12 xshift 1.0 from 6.0,4 move 2 payoffs -1 0 0 1.01
\draw [line width=\treethickn,color=playerfourcolor] (11.5,-10)
   node[below,yshift=0.1\paydown,color=playeronecolor] {$\mathsf{-1{\phantom-}}\strut$}
   node[below,yshift=-0.9\paydown,color=playertwocolor] {$\mathsf{0}\strut$}
   node[below,yshift=-1.9\paydown,color=playerthreecolor] {$\mathsf{0}\strut$}
   node[below,yshift=-2.9\paydown,color=playerfourcolor] {$\mathsf{1.01}\strut$}
   -- (10.5,-6);
\draw (11,-8) node[right,xshift=0.5mm,color=playerfourcolor] {2\strut};
%% iset 2.0,1 6.0,2 player 2
%% iset 6.0,1 2.0,4 player 1
%% iset 2.0,2 6.0,3 player 3
%% iset 2.0,3 6.0,4 player 4
\node[inner sep=0pt,minimum size=\sqwidth,draw=chancecolor,fill=chancecolor,shape=rectangle] at (0,2) {};
\node[inner sep=0pt,minimum size=\ndiam,draw=playertwocolor,fill=playertwocolor,shape=circle] at (-9,-2) {};
\node[inner sep=0pt,minimum size=\ndiam,draw=playeronecolor,fill=playeronecolor,shape=circle] at (-7.5,-6) {};
\node[inner sep=0pt,minimum size=\ndiam,draw=playerthreecolor,fill=playerthreecolor,shape=circle] at (-3,-2) {};
\node[inner sep=0pt,minimum size=\ndiam,draw=playertwocolor,fill=playertwocolor,shape=circle] at (-1.5,-6) {};
\node[inner sep=0pt,minimum size=\ndiam,draw=playerfourcolor,fill=playerfourcolor,shape=circle] at (3,-2) {};
\node[inner sep=0pt,minimum size=\ndiam,draw=playerthreecolor,fill=playerthreecolor,shape=circle] at (4.5,-6) {};
\node[inner sep=0pt,minimum size=\ndiam,draw=playeronecolor,fill=playeronecolor,shape=circle] at (9,-2) {};
\node[inner sep=0pt,minimum size=\ndiam,draw=playerfourcolor,fill=playerfourcolor,shape=circle] at (10.5,-6) {};

% Player color legend
\begin{scope}[scale=1,shift={(-12.0,2.0)}]
\node[inner sep=0pt,minimum size=\sqwidth,draw=chancecolor,fill=chancecolor,shape=rectangle] at (0,0) {};
\node[anchor=west] at (0.3,0) {Chance};
\node[inner sep=0pt,minimum size=\ndiam,draw=playeronecolor,fill=playeronecolor,shape=circle] at (0,-0.625) {};
\node[anchor=west] at (0.3,-0.625) {Player~1};
\node[inner sep=0pt,minimum size=\ndiam,draw=playertwocolor,fill=playertwocolor,shape=circle] at (0,-1.25) {};
\node[anchor=west] at (0.3,-1.25) {Player~2};
\node[inner sep=0pt,minimum size=\ndiam,draw=playerthreecolor,fill=playerthreecolor,shape=circle] at (0,-1.875) {};
\node[anchor=west] at (0.3,-1.875) {Player~3};
\node[inner sep=0pt,minimum size=\ndiam,draw=playerfourcolor,fill=playerfourcolor,shape=circle] at (0,-2.5) {};
\node[anchor=west] at (0.3,-2.5) {Player~4};
\end{scope}

\end{tikzpicture}

                        \end{document}