An unwritten rule (or perhaps a well known agreement) in Day of Defeat (atleast in the early days) involved melee duels.

The maps generally had an urban design; you could often hear opponents around a corner even if you couldn't see them. Players sometimes stabbed the walls with a melee weapon near an enemy to offer a melee duel, which was easily heard, with the second player communicating that they accepted the duel by also stabbing a wall, at which point they'd meet up and have a pretty short melee fight (melee weapons would kill in about 1 second).

A similar system was seen in Counter-Strike, but players didn't respawn continually throughout a match in CS, as it had elimination rounds. So the CS version involved the last member of a team sometimes initiating a fun melee fight to end the round.

Half-Life mods
- Day of Defeat

Main index
- Unwritten rules