@echo off
Set Bank=100000000
GOTO STAKE

:rand
set /a ret = %random% %% %2
if %ret% LSS %1 set /a ret += %1
If %ret% == 0 GOTO WIN
If %ret% == 1 GOTO LOSE

:TOOHIGH
Echo Please enter a value under %Bank%gp.
Echo:
GOTO STAKE

:CLEANED
Echo:
Echo You have been cleaned.
Echo Press any key to exit
pause > null
exit


:WIN
set /a Bank=%CurrentBet%+%Bank%
Echo You have won %CurrentBet%gp.
If %Bank% LSS 1 GOTO CLEANED
Echo:
GOTO STAKE

:LOSE
set /a Bank=%Bank%-%CurrentBet%
Echo You have lost %CurrentBet%gp.
If %Bank% LSS 1 GOTO CLEANED
Echo:
GOTO STAKE

:STAKE
set CurrentBet=
set /P CurrentBet=You have %Bank%gp left. How much would you like to stake?: %=%
If %CurrentBet% GTR %Bank% GOTO TOOHIGH
Call :rand 0 2