Another key aspect of open play is that it gives players permission to change a rule if doing so will improve the experience in the moment. For example, a vital unit might unexpectedly lose combat and Break, causing the game to end suddenly and unsatisfyingly. Of course, such is the way of things and there is no altering that. However, sometimes players encountering such an event might agree to alter the outcome of the Break test, perhaps allowing the defeated unit to instead Fall Back in Good Order. Doing so might extend the game and, more importantly, might feel like the more correct outcome in the circumstances.

By way of another example, imagine a battle fought under the gloom of twilight. In such conditions, shooting may reasonably be expected to be less effective. To evoke this, players may add a rule, perhaps agreeing that all long range shooting suffers an additional -1 To Hit modifier, or perhaps agreeing that the Range characteristic of all missile weapons should be reduced.

Whatever the case, players – especially good friends who know one another well – are encouraged to make amendments to the rules before or during a game if doing so will help to enforce the narrative. Provided both players are having fun and are in agreement, such amendments and alterations can lead to some truly memorable moments.