200269,65120,413856,413857,413851,413852,765,250820,764,753,241100,218800,248210,238460,938,955,984,981,902,920,919,921,935,940,2145,903,918,917,901,1645,1635,947,982,946,904,912,913,914,915,905,932,933,934,936,937,916,930,942,950,958,959,951,976,975,944,974,922,943,956,986,906,941,924,961,926,1220,907,925,954,979,968,969,970,971,972,973,908,948,909,1317,928,215,218,980,7,923,931,985,977,978,962,957,953,963,964,965,966,967,929

Open up your steam groups edit mode page!

Throughout the tutorial this will be the page you must always be on!

For this step you must add a random game to the associated games section just to start the list of games for later.

• For this tutorial please use PLAYERUNKNOWN's BATTLEGROUNDS to make things easier as you follow the guide as this is the game I will be using for the sake of this tutorial.

For this step you must right click in the area indicated on the image below and inspect element!

Here is what inspect element should look like:

• groupadmin_subarea will be highlighted
  
  
• You will notice a value. This varies depending on the random game you chose.
  
  
• If you chose PLAYERUNKNOWN's BATTLEGROUNDS Your value should equal "578080"

Image of inspect element page:

This last step just requires you to copy all titleIDs I have listed in the first section and paste them where the value of your random game is located. Just replace that ID with the whole list like so:
After pasted, just press saved and your games should appear!