My thoughts: 1. I think it needs an animation to show the pieces dropping — an important difference between connect 4 and tic-tac-toe is the role of gravity.

My thoughts: 1. I think it needs an animation to show the pieces dropping — an important difference between connect 4 and tic-tac-toe is the role of gravity. 2. the win/lose popup appearing immediately is a bit jarring. It would be better to highlight the winning 'line' and put the "player two wins" message so it doesn't cover the board. The 'end game' button can then be re-labelled 'new game'