Card game rules guides
The rules people argue about, settled — with a free table to try each one.
Colour-matching shedding games all share a core — match the colour or the symbol, empty your hand first — but every family plays them a little differently. Can you stack a +4 on a +2? What happens on a 7? Do you have to announce your last card? These guides explain the classic answer, the popular house rules and exactly how Prism Riot plays each rule, so you can settle the argument and then try the rule for yourself in a free game.
Each guide ends with the Prism Riot modes where that rule is switched on. Everything runs in your browser — no download, no account.
Crazy Eights rules: the complete guideCrazy Eights rules explained: the deal, matching, why 8s are wild, draw-two 2s, scoring, 2-player rules and winning strategy — then play free online.Stacking rules: can you stack +2 and +4 cards?Can you stack a draw 2 on a draw 2, or a draw 4 on a draw 2? Official vs house stacking rules, cross-stacking, how the pile passes and how to defend.No Mercy rules explained: +6, +10, the mercy rule and moreNo Mercy card game rules in plain English: +6 and +10 cards, stacking, discard-all, skip-everyone, roulette and the 25-card mercy rule. Play Merciless free online.The 7-0 rule: swap on 7, rotate on 0The 7-0 rule explained: playing a 7 swaps hands with any player, a 0 rotates every hand. Examples, strategy and where to play it free online.The Jump-In rule: playing out of turnThe jump-in rule explained: if you hold the exact same card as the top card you can play it out of turn. How it works, examples and strategy — play it free.Calling your last card: the rule and the penaltyWhen do you have to call your last card, what's the penalty if you forget, and can you call before playing? The calling rule explained, with a free online mode.Flip card game rules: light side and dark sideHow double-sided flip card games work — and Prism Riot's Eclipse pack: one card flips the table, actions turn harsher on the dark side. Rules, tips and free play.Attack-style rules: the random card launcherHow 'attack' card games with a random card launcher work, and Prism Riot's Eruption pack: the draw pile erupts 0–4 cards, BLAST and ALL BLAST. Rules and strategy.How scoring works in colour-matching card gamesHow points work in shedding card games: number cards face value, actions 20, wilds 50 — first to 500. Worked examples and a free score calculator.Two-player rules for colour card gamesPlaying a colour-matching card game with two players? How reverse acts as a skip, how draw cards work, and the best 2-player strategy — play free against the computer.Fun house rules for colour-matching card gamesThe best house rules for shedding card games — stacking, 7-0, jump-in, doubles, draw until you play, no mercy and more — and a free online table that plays them.Wild card rules: PRISM, +4 and ending on a wildWild card rules explained: when you can play a wild, choosing the colour, the +4, stacking wilds and whether you can go out on a wild card.What happens when you can't play a card?Can't play a card in a colour-matching game? The draw-one rule, draw-until-you-can-play, whether you can play the drawn card, and eruptions — all explained.How to win more: 15 strategy tipsProven strategy for colour-matching card games: card counting, when to hold wilds, stacking defence, the Riot Meter and how to beat hard computer opponents.Pyramid card puzzles: how to solve themHow Prism Riot's Pyramid Chains puzzles work — uncover cards, match energy or symbol, clear the pyramid — with solving techniques for 60 free levels and a daily puzzle.