This game is a bit complex, the rng is tricky. Correct me if I'm wrong:
I have 10 pieces to make a single colored line (orange or blue is fine), once I get the line I get 5 more pieces.
The inability to soft drop killed most of my plays, basically I almost had my line but couldn't get the right piece.
3h is too short I agree, but if you want to expand this add a soft drop and hold piece