(A) system-independent prose narrative
Below is my proposed prose narrative for a sample combat that illustrates various RPG rules. Each paragraph corresponds to roughly half a round, more or less (though different RPG systems may handle time differently).
One night, a wizard and a warrior are strolling down an alley where a rogue and bard--hired to steal the wizard's pouch--are hidden. The wizard and warrior fail to spot the rogue, but the warrior spots the bard at the end of the alleyway. He stops and calls out to the bard, who raises a bow and fires! The warrior blocks the arrow with his shield and then pulls his sword. At the same time, the rogue jumps out of the shadows behind the wizard and surprise attacks him with a club in an attempt to knock him out. The attack hits but is not a knock-out. The wizard is too surprised to react right away.
The warrior charges the bard, trying to knock him down. He is successful. Meanwhile the wizard turns around and tries to cast a spell at the rogue, but the rogue strikes the wizard and disrupts the spell.
The fallen bard lets go of his bow and pulls a magic wand from his pack. Meanwhile, the rogue hits the wizard yet again, but the wizard remains standing.
Next the wizard realizes he needs to take a step backwards before casting his spell, which is successful and damages the rogue. The warrior swings his sword and breaks the bard's magic wand in two.
The bard discards the broken wand and stands up, narrowly missing yet another sword swing by the warrior. The rogue steps forward and successfully grabs the wizard, placing him in a hold.
The warrior makes a furious attack and slashes the bard's chest open. The bard falls back down to the ground, wailing in agony and clawing the ground in a futile attempt to escape. Meanwhile, the wizard struggles against the rogue but cannot break free.
During the struggle, the rogue snatches away the wizard’s pouch. The bard tries to staunch the flow of blood from the massive wound in his chest.
The bloodthirsty warrior puts the bard out of his misery, then looks up to see the wizard struggling unsuccessfully against the rogue.
With the object of his mission in hand, the rogue releases the wizard and runs away at top speed. The warrior's heavy armour prevents him from catching the fleeing rogue.