|Grab a token from the powder bath|
|Fail to find a token before time is up|
|There are less tokens than contestants|
Here there is a row of eight walls. Each wall has seven doors in it. Behind the final wall is a long mud pit.
All the contestants, at the same time, run at the doors. If they run into an unlocked door they'll burst through and continue onto the next wall; but if they choose a locked door they'll bounce off again. By choosing a wrong door the contestants aren't out - they can continue trying doors until they make it though, or just go through a door that has already been opened.
As added hindrances; behind some of the doors are pools, mud pits or nets to trap the contestants. There's also the Boxing Monster, who is lurking in the middle to try and slow the contestants down.
After making it through all eight walls the contestants will reach the mud pit. Buried in the mud are tokens (such as keys or coins) of various sizes that they have to find. There aren't enough for everyone though, so the contestants need to make their way to the end as quickly as they can to make sure that they get one for themselves.
times; in episodes:
1-3, 12, 15, 20, 31, 35, 39, 41, 46
|•||Knock Knock is the only starting game not to be played in the team version of the show (from episode 50 onwards).|