It is not a playable level. Level 20 is impractically difficult but can be beaten.
51210 is for level 21
21. 51210
51210
There is no level 50, but level 21 is 51210.
There is no level 23, but to get to level 22 just google Orb 2, click the second result, and complete the game here to unlock level 22.
There are only 21 levels.
51210 is the code for the last level for orb 2 TNL
Level 18 is 35626 on ORB 2 and ORB 2 TNL.
ok i know one for lv 21(final level) 51210 i already have done the hole game
level 14 is:80369 level 15 is:73108 level 17 is:41205 level 19 is:27883 level 20 is:19094 level 21 is:51210
The last level to orb 2 is 51210
The last playable level is level 20: 19094 (last level) The passcode for level 21 is 51210, "You Have Won" (unlock all bonus games)