Play Multiple Cards of the Same Number — Doubles Mode
Play every card of the same number in one move. A web-exclusive mode — Free in your browser, no download.
About Doubles
Doubles: Play every card of the same number in one move. House Rules tables are new on the website: the table rules people argue about at home, built into the engine so nobody has to referee.
The table
4 players: you and 3 computer rivals. Everyone starts with 7 cards.
Sharp rivals shed high-value cards first, save their wilds for the end and keep the colour they hold most of alive. They are the standard opponent.
The deck
The table uses the 126-card Prism deck: numbers 0–9 in four energies (Flare ▲, Surge ●, Volt ◆, Void ■), two each of FLIP, FREEZE, +2, SHIELD and SWAP per energy, 6 PRISM wilds and 4 +4 wilds.
How a turn works
On your turn, play one card that matches the active energy (colour) or the symbol of the top card. Wild cards play on anything and you choose the next energy.
Can't play? Draw one card and your turn passes.
Special rules at this table
- Stacking: answer a +2 with a +2 or a +4 with a +4 to pass the growing pile to the next player. The first player who can't stack draws it all.
- SHIELD cards stay in front of you and block the next draw attack aimed at you, however big it is.
- The Riot Meter charges with every card you play; combos charge it faster. At 100% hit RIOT BURST to shatter up to 2 number cards of the active energy at once.
- Doubles: play every number card of the same value in one move. The first must be legal; the last one you lay sets the energy.
How to win
Be the first to shed every card. Your score is 100 for the win plus the points left in your rivals' hands, a speed bonus for quick wins, 25 per Riot Burst, a combo bonus and 50 extra for winning without drawing a single card.
Tips for Doubles
- Hoard pairs. Two or three of the same number shed in one move and charge the Riot Meter for each card.
- Charge the meter with combos. Several plays in a row fill it faster; burst when it shatters your highest-point number cards.
- Play a SHIELD early when your hand is large — it waits in front of you and eats the next +4 or +10.
- This mode trains speed on your skill radar and pays ×1.15 XP.
Rule guides for this mode
Frequently asked questions
Is Doubles free to play?
Yes. Doubles and every other Prism Riot mode are free in your browser with no download, no sign-up and no account. Progress is saved in your browser.
Can I play Doubles offline?
Yes. After your first visit Prism Riot works offline — add it to your home screen from the browser menu and it opens like an app.
How many players are in Doubles?
4 players: you against 3 computer opponents at sharp difficulty. Each starts with 7 cards.
Can you stack draw cards?
Yes, +2 on +2 and +4 on +4. A +4 cannot be stacked on a +2 here (it can in Mayhem and the Merciless modes).
Can I challenge a friend on the same deal?
Yes. After a round, tap “Challenge a friend” — the link opens the exact same shuffle for them, with your score to beat.
Is this mode in the app?
Not yet — it is one of the web-exclusive modes on playprismriot.com, alongside Jump-In, Last Card Call, Doubles, House Party, the Endless Gauntlet and the Daily Duel.