If you look at this section in Games.ini, here is how it looks by default:
; This section is intended for games that do not load automatically
; Adding a game's name here might help, or it might not - some games have
; protection against injection - in this case you will need to copy all
; SWITCH files into the game's folder (as a last resort).
; You can specify either a game name,
; a partial game name,
; a part of game's path, etc.;
; Mothhead.exe is based on Unity3D engine. For Unity3D-based games you need
; to add the game's name here...
; Another Unity game (https://mathbreakers.com/):
; All games in a specific folder:
You can follow examples that you see, or you can read instructions there (highlighted).