It'd be easier just to press "f" next you start it.
Final, Final-Script - With failsafe
Run the exe
Wait 'til it's actually active
Get the window 'Style' of the exe's window and save them to the variable 'style'
If within the 'style' contains "Title Bar" (when the game is not fullscreen, it has a Title Bar. aka "WS_CAPTION". aka "0xC00000")
Press "f". And to be safe, make sure you send it to the exe's window.
"hang out until it's no longer running."
#SingleInstance force
SetWorkingDir %A_ScriptDir%
Run, Z2TAOL_P03.exe
WinWaitActive, ahk_exe Z2TAOL_P03.exe
WinGet, style, Style, ahk_exe Z2TAOL_P03.exe
if(style & 0xC00000)
ControlSend,,f,ahk_exe Z2TAOL_P03.exe
WinWaitClose, ahk_exe Z2TAOL_P03.exe
ExitApp
$Esc::
Send, !{F4}