I can tell you ya have to be over Lv. 40... I have all my cats over Lv. 40 and STILL can't get past that level! :/ Oh yeah, and the best way to get silver is to just go between da computer and home :p Idk if you already know so... xD
City to Home, Home to Computer, Computer to City. Repeat
Make sure your cats can do over 40 in damage like my ROBOCAT can in Level 50 (47 damage)
