Most conflict I have seen break down to 2 categories, mechanics and play style. I have played for decades, PbP for 10+ years, and seen both types lead to players leaving or being ejected form games or even kill the game entirely.
1. The mechanical conflicts arise for rules heavy systems, ex D&D in most of it's flavors. The simple fix is actually in the rules stating the DM is the final arbiter. That does not stop players from arguing though. Disagreements and misunderstandings are one thing but after a case is presented and a DM makes a rules that should be it. If after the initial question a player can not agree with the GM they should move further discussions to private messages.
2. Play style in my opinion is sometimes harder to deal with.
Examples :
A: Having combat focused player(s) constantly dragging the party into fights in a puzzle or intrigue campaign or even with other players who just want to explore more options
B: Player(s) who love role play and wants to chat with every NPC and get their full back story in a dungeon crawl
C: A aggressive or just very active player dominating party decisions. Some people just don't like conflict and constantly arguing with someone over every group decision is tiring. On the other hand I have seen parties where the other players are fine having someone else keeping someone besides the GM moving things along all the time.
While a good GM can adapt so any situation to be solved in a variety of ways and this can be fun it can also be frustrating and/or exhausting if this is not what you expected and it happens all the time. The best solution IMO is just to have clear expectations all around.
There is a 3rd but it if fortunately rare and I have not seen it in PbP. The player(s) who activity tries to derail a campaign and/or finds flaws with the story/scene. Just don't.
Last edited October 16, 2025 5:39 pm