Ooohh I will definitely check out Pencil Park!
Thank you for the comment. I will try to explain here:
Q: is it one grid per player?
A: all players use the same common grid, but hey if you want to play on different grids that's your prerogative as well!
Q: is there 1d6 rolled every turn and every player use it, or should each player roll its dice ?
A: I originally imagined it as each player roll a dice for their own turns, but your suggestion works too!
Q: is it ok if 2 tetra-blocks with the same marker touch each other ?
Q: If I got the points system right, the goal is absolutely NOT to fill lines but to get as high as possible ?
A: You are correct! Filling a whole line will cause a forfeit. Either missing a turn or just game over.
Thank you so much for playing and spending generous time asking these questions anf clarifications!