Match. Stack. React. Betray.
Play against computers, invite friends, or watch a game already in progress.
Guest mode is available after a game starts. Guests can watch live and use room chat, but cannot see private hands or take game actions.
Join a waiting table or watch a match already underway.
On a normal turn, play one card that matches the active color or the symbol/value on the discard pile. Any Wild card can be played regardless of the current color. The first player with no cards wins the round and scores the cards left in the other hands.
A room supports one to eight player seats, with optional computer opponents. Once the match starts, additional people may join in Guest Mode to watch and chat.
Each entry explains when the card can be played, what it does, which reactions can answer it, and what matching rule applies afterward.
When Draw Two, Wild Draw Four, or Skip targets you, eligible reaction cards appear for five seconds. Tap a reaction card or Pass. Draw attacks may stack repeatedly. Trap returns the full draw total to the previous attacker, who may defend or stack again.
Guests see the live table, player card counts, active color, discard pile, match feed, and room chat. They never receive a hand and cannot take game actions. The host can disable chat, kick, or ban players and guests. During an active match, a removed player’s seat is safely taken over by a computer so the game can continue.
Chaos Stack includes distinct sounds for normal cards, special cards, reaction battles, chat messages, and match wins or losses. Use the Sound button in the header to mute or restore all effects. Browsers enable audio after your first click or key press.
Optional Insanity Rule: When enabled, a player who cannot play keeps drawing until a playable card is found, then continues the same turn.
Going out ends the round. The winner receives a 25-point out bonus plus the value of every card left in the other players’ hands. Number cards score face value; Skip, Reverse, and Draw Two score 20; Shield, Reflect, Swap Hands, Trap, Combo Breaker, and Sabotage score 25; Wild Shift scores 35; Chaos Spin scores 40; and Wild Draw Four scores 50. Only the player who goes out scores that round. Auto scoring uses 300 points for two players and adds 300 for each additional player; hosts may choose a custom target before the match starts.
Configure scoring, custom rules, and this device’s presentation.
Keep matches competitive at every table size.
Change how drawing works for everyone in the room.
These options only affect this device.
Player controls for this room.