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Fourth Move Forgets

Three in a row still wins, but every fourth mark erases your oldest one. The board never truly settles.

ThemeWarm Static

OpenerP1 (X)

P1 (X) to place.

Keys: A S D / F G H / J K L / Space

Scoreboard

All six tallies stay saved in your browser.

P1 (X) 0

P2 (O) 0

You 0

AI 0

You 0

AI 0

The oldest mark goes dim when it is next in line to vanish.

FIFO Each player keeps only three live marks. On the fourth placement, their oldest mark disappears at the same moment.
Random opener Every new round starts with a coin flip. In AI modes, you are always X and the AI is always O.
Keyboard grid

ASD

FGH

JKL

Space