The full guide: the goal of the duel, hero abilities, d6 and d20 dice rolls, energy, blocks and crits, controls on muta.pro and tactics for beginners. Read it — and straight into the arena.
Heroes Arena is a turn-based duel between two fighters on dice. Your task is to reduce the opponent's health to zero before they do the same to you. Each hero has two bars: health (HP) and energy. Every turn you pick one move, and the dice decide the outcome — damage is not fixed, so even a weak blow can turn out crushing.
Each turn is a move plus dice rolls; damage isn't fixed. Bring your opponent's HP down to zero.
The fight is one on one: you against the opponent (on muta.pro a bot can take their role). Each hero has their own reserve of health and energy — for example, a defender has more HP, while a mage has more energy. The first move is yours. The dice are in the center of the arena: d6 is responsible for damage, d20 — for accuracy and the chance of a crit.
Basic attack. You roll a d6 — the number rolled is the direct damage dealt to the opponent. Free, no energy cost.
First a d20 roll to hit: a low value is a miss, a high value is a crit with double damage. After a hit you roll a d6 and add the charge bonus.
You raise a block: the opponent's next attack is halved, your strike "charges up" for a bonus, and you gain a little energy (+⚡5).
Spends energy. A d6 roll determines how much health you restore. Useful when HP is running low.
The most expensive move: two d6 dice plus a d20, combined into a crushing blow with a charge bonus. Requires a lot of energy.
The d6 attacks and the precise thrust are free, while healing and the special move consume energy — you have to save it up, including through defense. A raised block reduces the damage of the next enemy attack by roughly half and at the same time charges your next strike. Turns alternate: you pick a move, the dice decide the outcome, then the turn passes to the opponent, and so on round after round. The winner is the one who empties the opponent's health bar first.
Sometimes it is better to strike cheaply for a couple of turns and reach ⚡20 than to waste a turn.
Defense not only absorbs damage but also boosts your next strike — a good combo before an attack.
Don't wait until HP becomes critical: healing depends on a d6, and it is better kept in reserve.
The precise thrust is risky because of the miss, but on a high d20 it deals double damage — a powerful finisher.
The arena is won not by the strongest roll but by economy. The strike and precise thrust are free, while healing (⚡10) and the special move (⚡20) require accumulated energy, which mostly comes from defense. That means every turn is a choice between damage now and an investment in a future explosion. A good player keeps three numbers in mind: their HP, their energy, and the opponent's expected damage per round.
The average d6 roll is 3.5, not 6. Build your plan around 3–4 damage per ordinary strike, then your decisions won't depend on luck, and a rare six becomes a pleasant bonus rather than the only scenario.
⚡20 for the special move is two d6 plus a d20 at once, that is on average twice an ordinary strike. A couple of blocks pay off if you are guaranteed to land the special afterwards.
Healing depends on a d6 and won't save you from a finishing blow. Plan it ahead: when HP drops to the level of two or three enemy strikes, healing is already overdue — waiting lower is dangerous.
Whoever imposes the threat of the special forces the opponent to defend and heal instead of attacking. The initiative in a duel is worth several points of damage.
On each turn you have five options, but the right one is almost always dictated by the ratio of HP and energy — yours and the opponent's. Below are working combos that turn random rolls into a meaningful plan.
Defense absorbs the enemy attack by roughly half, gives +⚡5 and charges your next strike. Raise a block before an expected strong attack — and next turn strike with the boost.
If the opponent is far from killing you, two or three cheap attacks or blocks for the sake of ⚡20 are better than trading blows. Then one special move changes the score.
The precise thrust risks a miss on a low d20. Keep it for the finishing blow, when the opponent has little HP and even an average crit closes the game.
Healing in the open means taking full damage in return. Tie defense and healing together: first the block absorbs the blow, then the recovery returns more clean HP.
The key skill is to read the opponent's energy. If they have less than ⚡10, healing and the special are unavailable to them: you can safely press with damage. As soon as they have gathered ⚡20, expect an explosion — it is the perfect time to raise a block.
Heroes differ in their reserve of health and energy: a defender has more HP, a mage has more energy. This determines what line to run. The same arena plays out differently depending on who is in front of you.
You can afford to trade blows and heal less often. Your strength is surviving enemy crits, so save up for the special calmly: the opponent will break against your health reserve first.
HP is fragile, but the special is available quickly. Play off the threat of ⚡20 and healing, avoid drawn-out trades — every attack you take is more costly for you.
Don't try to out-damage them head-on — you won't have enough. Save up for special moves and precise thrust finishers to break through their large reserve in big chunks.
Press with tempo: don't let them calmly save up ⚡20. A constant threat forces them to spend turns on defense and healing, and they won't assemble their explosion.
Keep the dice spread in mind: a game of 15–25 minutes is dozens of rolls, and the variance evens out. Over the long run the winner is the one who repeatedly picks the move with the best average, not the one who rolled a six once.
Most losses in the arena are not bad luck but predictable errors in decisions. Here are the ones that cost games most often.