In Regicide, the seven of hearts can help replenish your group's supplies or absorb an enemy's blow. Spend it surviving and you've given up a chance to replenish those supplies. Play it to replenish them and you might not have enough left to survive. An ordinary playing card becomes a small argument about what everyone needs next.
You can play this cooperative game with a standard deck of playing cards. The twelve Jacks, Queens and Kings become enemies, fought one at a time in that order. Everyone has a private hand; on your turn, you play cards to attack the current enemy. Defeat all twelve and everyone wins. Let one player fall and everyone loses. The adventure comes from trying to get the whole group through, using the same cards for fighting, protection and recovery.

Your hand pays twice
A card's number supplies its attack value, while its suit adds a power. Clubs deal double damage. Spades reduce the current enemy's attack, protecting you now and your teammates on subsequent turns against it. Hearts return discarded cards to the shared draw pile. Diamonds let players draw from that pile into their hands.
If your attack doesn't defeat the enemy, it strikes back at you. You must discard cards whose values cover its attack, after any spade protection. Those discards are lost opportunities as well as lost protection: a diamond thrown away to survive cannot draw anyone cards on a later turn unless it eventually returns to your hand.
That gives even a helpful play a cost worth considering. A spade can reduce how much everyone must discard through a long fight. A club can end the fight sooner, avoiding further retaliation altogether. But cards played against an enemy stay on the table until it's defeated. You can't immediately recover a useful card just because you've finished using its power.
Clearing the way doesn't refill your hand
Defeat an enemy and the player who finishes it escapes its retaliation. Then that same player immediately takes another turn against the next enemy. There's no automatic refill between fights. The cards committed to the old fight enter the discard pile, and whatever remains in your hand must get you started again.
Hearts can restore the shared supply, but they put recovered cards underneath the draw pile, not into anyone's hand. Diamonds distribute draws one at a time clockwise, starting with the player who played them and skipping anyone whose hand is full. Having cards available and getting them to the person who needs them are separate problems.
For a hypothetical two-player example, suppose the last Jack is a spade and has already taken six damage. You hold the eight of clubs, seven of hearts, four of diamonds and nine of spades. Your eight of clubs deals sixteen damage, taking the total past the Jack's twenty health. You win that fight, discard the played cards and immediately face the first Queen. It's a club.
Now your seven of hearts looks inviting: it can return up to seven discarded cards to the draw pile. But the Queen has thirty health, so seven damage won't defeat it. Its fifteen-point reply would leave you trying to pay with just the four and nine. Thirteen isn't enough. The shared supply could be healthier at the very moment everyone loses.
The four of diamonds offers a different continuation. With at least four cards in the draw pile and room for at least two cards in your partner's hand, it gives each of you two cards. You can cover the Queen's reply by discarding your seven and nine, retaining your two new cards. That spends both a recovery card and a protective card to keep going, while also supplying your partner. It's a concrete reason to care about the next player's prospects as well as your own.
Recovery can produce more than a reprieve. Defeat an enemy with exactly the required damage and it goes on top of the draw pile instead of into the discard. Once drawn, a Jack is worth ten, a Queen fifteen and a King twenty. Yesterday's obstacle can become the card that carries a later fight. Regicide allows your fortunes to improve, even as the enemies grow stronger.
You can see the danger, but not everyone's answer
Each enemy also blocks the power of its own suit. Against a diamond enemy, diamonds still deal their ordinary damage but don't draw cards. A group can therefore have a replenished draw pile and several diamonds in hand without being able to use them for supplies during that fight. Against a spade enemy, your usual way of making repeated turns cheaper stops working.
You can't freely explain how your hand might solve these problems. Regicide forbids revealing or suggesting its contents, including asking someone to play a particular suit. Public facts, such as how many cards each person holds, are fair to discuss. In three- and four-player games, a Joker can briefly open a narrow conversation about who would like to act next, but even then the cards themselves remain private.
This makes assistance something you judge from visible circumstances. You can see that someone has only two cards, and choose to play diamonds without knowing what those two cards are. They still decide how to use the help. There is room for cooperation without one person calculating everyone's turn, provided the group respects those boundaries.
That is the invitation to try Regicide: familiar cards supporting a shared adventure in which helping, surviving and advancing keep borrowing from one another. It suits a group that enjoys making consequential choices with incomplete knowledge and is willing to lose and try again. If the pleasure you want is a long, open discussion of everyone's options, its communication limits may feel restrictive. If supplying a teammate and trusting them to find the next move sounds appealing, take an ordinary deck and the official Regicide rules.

