A TPK, short for Total Party Kill, is what happens when every player character in the group is killed or knocked out during a single encounter, leaving no one standing to fight on. It is the moment the dragon's breath catches the whole party, the trap floods the room, or the cult's ambush goes exactly to plan. When the dust settles and not one hero is left, that session, and sometimes the entire story arc, comes to a hard stop.
The term comes straight from player slang. It grew up at the table, in forums, and in countless war stories long before it appeared in any rulebook. If you have ever heard a group groan "we almost TPK'd," you already know the feeling.
In practical terms, a TPK is the failure state for the whole group at once. One character dying is a tragedy with a funeral; a TPK is the campaign hitting a wall.
In Dungeons & Dragons 5th Edition, "killed or knocked out" usually means every PC has dropped to 0 hit points and is either dead or making death saving throws with no ally able to help. Once nobody can act, the enemies are free to finish the job, flee, or take prisoners. A TPK does not require everyone to be literally dead in that instant; it simply means the party has collectively lost the fight.
TPKs rarely come from a single mistake. They tend to be a pile-up of small ones. Common causes include:
Not necessarily. A real risk of a TPK is part of what makes combat exciting. If players know defeat is always off the table, the stakes feel hollow and victory feels cheap. A close brush with annihilation, or even a planned heroic last stand, can become the story a group retells for years.
The trouble starts when a TPK feels unfair or anticlimactic. A party wiped out by a stray bad roll, an undertelegraphed trap, or an encounter the GM secretly over-built can sour a whole campaign. The difference between a memorable defeat and a frustrating one is usually whether the players felt they had a fair chance and meaningful choices along the way.
A good Game Master has plenty of tools to keep a wipe meaningful rather than miserable:
One more tool deserves a careful note: fudging (quietly altering a roll or a monster's hit points behind the screen) and the deus ex machina rescue. Used sparingly and honestly, these can save a session from an undeserved wipe. Used too often, they teach players that nothing they do really matters. Many tables prefer rolling in the open precisely to avoid that temptation. If you lean on them, do it rarely, and know your group's preferences.
Survival is a team sport. You can tilt the odds in your favor by playing thoughtfully:
Tracking initiative and hit points carefully is one of the simplest ways to keep a deadly fight from quietly spiraling into a wipe, and tools like Mini Kraken handle that bookkeeping so you can watch the danger coming and react in time.