Not sure if you are supporting web on mobile, but I got a bug where the piece stopped moving mid-drag. (I think I got a notification when that happened). Restarting the game reopens the save but without any piece to place, so I can't proceed.
The game was interesting for the amount I played at least.
Really sorry, the jam deadline crunched out a tutorial. 😓
If you still want to know, you select the vowel and strength on the right side, then press and hold the consonants on the left side to generate sounds in order to mimic human speech.
