Connect Fourth | Arcade HTML5 Game

Connect Fourth — An Addictive Four-in-a-Row Arcade Game
Connect Fourth is a polished, arcade-style four-in-a-row strategy game built entirely with vanilla HTML5, CSS and JavaScript — no libraries, no frameworks, no build step, no backend. Drop a disc into any empty cell and be the first to line up four discs in a row — horizontally, vertically or diagonally — to win.

Features

2 Game Modes: play against the AI or with a friend on the same device
4 AI Difficulties: Easy, Medium, Hard and a relentless Impossible bot (alpha–beta minimax)
4 Variations: Classic (free placement), Gravity (discs drop), Big 8×8 and Blitz (fast countdown)
5 Themes: Neon, Retro, Candy, Ocean, Royal — every color is a CSS variable
Best-of-5 Match Mode with live progr