STACKS Card Game

Think you can build the perfect sequence first? Challenge up to 6 players online in this fast, addictive card game. Friends join from any browser. Play free today!

STACKS™ – The Classic Card Game, Now Online!

Stack the deck in your favor and race to the perfect sequence!

STACKS brings the beloved gameplay of the classic card game Rack-O to your fingertips—now as an exciting online multiplayer experience for up to 6 players! Whether you're battling family across the country or challenging friends from the couch, STACKS delivers fast-paced fun that's easy to learn but tough to master.

How to Play • The goal is simple: draw and discard cards to arrange your hand in ascending numerical order. Think strategically, watch your opponents, and be the first to lock in the perfect sequence. Every turn counts!

Two Ways to Win Play your way! Choose your victory condition: • Race to the Top – Be the first to reach a target score and claim the win. • Round Champion – Battle through a set number of rounds and take the crown with the highest points at the end.

Perfect for Friends & Family • STACKS is the ideal game night companion—exciting, social, and endlessly replayable. Casual gamers, card game enthusiasts, and families alike will love the friendly competition and quick, satisfying matches.

Why You'll Love STACKS • Online multiplayer for up to 6 players • Two flexible win conditions to suit your mood • Easy to learn, addictively fun to play • Connect and compete anytime, anywhere • Friends can join from any web browser—no download required!

Free to play up to 5 times every month! Want more? Unlock additional plays whenever you're ready for the next round.

Recommended for ages 13+.

Download STACKS today and start stacking your way to victory!

STACKS is an independent game inspired by the classic number-sequencing card game Rack-O®. STACKS is not affiliated with, endorsed by, sponsored by, or associated with Rack-O or any current or former owner of the Rack-O name, trademark, or intellectual property. "Rack-O" is a trademark of its respective owner and is used here only to describe the kind of game STACKS is.