Tic-Tac-Toe

Tic-Tac-Toe is familiar, but it still works well in a portal because the rule set is instant and the pressure comes from decision quality rather than speed. Against the AI, each square matters because a single lazy move can open the whole board.

That makes it a nice balance to the arcade-heavy lineup. It offers a calmer pace while still giving players a reason to come back and protect a winning streak.

• Place your mark to build a line of three before the AI does.
• Protect the center when possible; it usually gives the most options.
• Watch for forks, not just immediate threats.
• Treat each match as part of a streak, not a one-off round.