Sequence board game rules for online play

The goal

The goal is to build connected lines of five chips on the board. A line can be horizontal, vertical, or diagonal. In two-team games, the first team to complete two sequences wins. In three-team games, one completed sequence is enough to win.

A completed sequence locks in most of its chips. Opponents can still block future lines, but they usually cannot remove a chip that is already part of a completed sequence. This makes timing important: sometimes it is better to finish a line immediately, and sometimes it is better to build two threats before revealing which one you want.

How turns work

On your turn, choose a card from your hand and place one of your team's chips on a matching open space. Most cards appear twice on the board, so you usually choose between two possible locations. After placing a chip, draw a replacement card so your hand stays ready for the next turn.

The best move is rarely just the first matching space you see. Look for spaces that extend your team's lines, block an opponent's four-in-a-row, or create two possible sequences at once. A quiet defensive placement can be stronger than an obvious attacking placement if it prevents an immediate loss.

Jacks and wild corners

Two-eyed Jacks are wild. They can place a chip on any open non-corner space, which makes them the most flexible cards in the game. One-eyed Jacks remove an opponent's chip as long as that chip is not protected inside a completed sequence.

The four board corners are wild spaces. They count for every team and can complete lines without requiring a chip. Corners are powerful because a line through a corner needs only four placed chips, so watch diagonal and edge threats carefully.

Dead cards

A card is dead when every matching space for that card is already occupied. In PlaySequence, the app can prompt for a dead-card replacement so you are not stuck holding a card that can never be played.

Dead cards also tell you something about board pressure. If many spaces are locked, the game is shifting from open development to tactical blocking. In that phase, Jacks, corner lines, and short defensive moves become more valuable.