Cyberpunk 2020: Dice & Strategy Guide

Cyberpunk 2020, Mike Pondsmith’s classic of the Dark Future, is famous for two things: dripping street style and brutally lethal gunfights. Its dice system is lean and fast — a single ten-sided die decides most actions — but a couple of sharp edges on that die keep every roll tense.

The dice and the core mechanic

Cyberpunk 2020 uses the ten-sided die (d10) as its workhorse. The standard task roll is 1d10 + STAT + skill, compared against a difficulty number the referee sets. Add the relevant statistic (like Reflexes or Cool) and your skill level to the die, and if the total meets or beats the difficulty, you succeed. The difficulty scale runs from easy everyday tasks up through “very difficult” and “nearly impossible” targets, so knowing the number you need shapes every attempt.

Because a single d10 is a flat, wide spread, your STAT and skill matter enormously — they set the baseline you can rely on, while the die adds the swing. A high skill turns a difficult task into a near-certainty; an unskilled attempt leans entirely on luck.

The exploding ten and the fumbling one

The d10 in Cyberpunk 2020 is not quite flat at its extremes:

• Roll a 10 — it explodes. A natural 10 lets you roll again and add the new result, so exceptional outcomes are always possible even against steep odds. (Referees typically cap the chain to prevent runaway totals.)
• Roll a 1 — it fumbles. A natural 1 means you roll again and subtract, and often triggers a critical failure — a jam, a slip, a fumble that can go badly wrong.

These two rules give the system its character: hope on every roll (that explosion could be your moment) and dread on every roll (that 1 could be a disaster). Skilled characters still fumble occasionally, which keeps even the best runners honest.

Friday Night Firefight: how combat resolves

Combat uses the infamous Friday Night Firefight system, and it is deadly. Initiative is 1d10 + Reflexes, and acting first genuinely matters when a single burst can drop a character. To hit, you roll 1d10 + Reflexes + weapon skill against a difficulty set by range and circumstances; the defender’s speed, cover and movement raise that number. When a shot lands, damage is rolled (guns commonly deal multi-d6 damage) and then reduced by the target’s armour Stopping Power (SP) before the remainder strikes the body — and wounds impose penalties, especially crippling head hits. Because armour is subtractive and bodies are fragile, firefights are quick, decisive and frequently fatal.

Effective strategy

• Win initiative and act first. With Reflexes driving initiative and combat so lethal, going first is often the difference between shooting and being shot. Prioritise Reflexes and anything that boosts your initiative.
• Respect armour and Stopping Power. Since SP is subtracted from every hit, the right armour can shrug off small-arms fire entirely, while heavy weapons punch through. Match your protection to the threat and target weak points on armoured foes.
• Use aimed shots carefully. Taking the penalty for an aimed shot to strike the head or an unarmoured location can end a fight instantly — but missing a called shot wastes a precious action. Weigh the reward against your real chance to hit.
• Build reliable skills. On a single d10, high STAT + skill is what makes you dependable. Specialise in a signature role rather than spreading thin, so your core actions clear their difficulty without needing a lucky roll.
• Play the fixer, not just the shooter. Cyberpunk rewards preparation — gear, contacts, positioning and the right approach reduce the difficulty of what you attempt. Solving a problem before the firefight is far safer than surviving one.

Beginner tips and common mistakes

• Combat can kill fast. Don’t treat firefights like a war of attrition. A single well-placed burst can drop a character, so avoid stand-up fights you don’t need and use cover relentlessly.
• Remember the explosion and the fumble. New players forget to re-roll on a natural 10 or 1. Those rules are the heart of the tension — apply them every time.
• Your STAT does the heavy lifting. With only one die, a poor statistic can’t be rescued by luck. Invest in the stats your role depends on.
• Note the difficulty before rolling. Knowing the target number tells you whether an action is safe, a gamble or hopeless — and whether it’s worth spending an action on at all.
• Cyberpunk RED is the modern successor. If you want a streamlined, updated take on the same world and feel, the newer edition refines much of this — but the lethal, d10-driven spirit carries straight through.

Want the modern edition of the same world? Read our Cyberpunk RED dice & strategy guide.