Hexcheat:
 Problem: 
 Back on Metro Prime - in the arcade I found it 
 very difficult to win sufficient tokens to get 
 a ticket to the zoo. 
 
 Solution: 
 Ask the attendant for some tokens & save the game 
 Hack the save file with the highest number 
 (e.g. save.027) and change the 1497th byte (hex 5D9) 
 to 244 (hex F4) using a hex editor (such as Matt 
 Dawson's FileView). You now have enough tokens to 
 ask the attendant to let you play on the other