Connect Four is a two-player game where the goal is to align four of your colored discs in a row on a vertical, horizontal, or diagonal grid. This is a classic puzzle game with many different names such as Connect 4, Four Up, Plot Four, Find Four, Captain's Mistress, Four in a Row, Drop Four, and Gravitrips.

https://aliustaoglu.itch.io/connect-four

This is a single-player game and played by mouse only.

You can download it for Windows or play it directly on your browser.