This is the first project I completed in pico-8: Connect four +
It is just like connect four but with a twist.
When someone puts four of their pieces in a row the game doesn't just end. Instead, the pieces disappear and everything above falls down sometimes making new four in a row's. For every four in a row, four random pieces of the other person will disappear.
You can play against a friend or against AI. (or let AI play against itself :-P)
controls

Use the arrow keys to select the slot in which you want to drop your piece.
X to drop the piece.

Have fun.
ps. I have never beaten the AI myself.
pps. I also have an itch.io page.