What kind of game is Abyssos?
Abyssos is a single-player, browser-based roguelike board game. Each run is a journey through one of three realms modelled on the Divine Comedy: the 9 Circles of Inferno, the 7 Terraces of Purgatorio, and the 9 Spheres of Paradiso. There is no account, no server save, and no paywall — your progress, card collection, and meta upgrades live in your browser’s local storage. A full run takes roughly 15 to 25 minutes per realm, which makes it well-suited to a commute or a lunch break, and death always sends you back to the start of the realm with whatever soul stones you banked.
The strategy comes from three sources. First, deck-building: across a run you collect 40+ cards (guardians, purifications, relics, curses, consumables) and the combination matters more than any single card. Second, meaningful combat: battles are decided by skill-based mini-games, so “how well you win” changes your rewards. Third, risk versus reward: shortcut tiles, curse cards, and gambling events tempt you to trade safety for power. The game is fully playable with one hand on a phone, supports Korean and English from the top-bar toggle (🇰🇷 / 🇺🇸), and never requires keyboard input. Progress survives a refresh but is wiped if you clear site data.
The goal of a run
Each realm has a clear win condition. In Inferno you start at the frozen depths of Circle 9 (Cocytus) and ascend circle by circle — defeating each gatekeeper boss — until you beat the Shadow of Virgil on Circle 1 and escape Hell. In Purgatorio you climb seven terraces themed on the deadly sins, passing each Angel Guardian, to reach Beatrice in the Earthly Paradise. In Paradiso you ascend nine celestial spheres through the archangels’ trials to reach the Empyrean.
Realms unlock progressively: Purgatorio only opens after Inferno, and Paradiso after Purgatorio. This is not just gating — each realm assumes the card literacy and mini-game muscle memory of the one before it. Clearing all three unlocks New Game+ (monsters gain +2 power, rewards scale to 1.5×) and the hidden Corrupted Virgil boss fight, the true endgame challenge.
The Inferno board, tile by tile
It helps to know exactly what is on the board before you start tapping. Each of the nine Inferno circles is exactly 12 tiles long, in a fixed pattern: five monster tiles, a midway event tile, five more monster tiles, a second event tile, then the gatekeeper boss fight that closes the circle. Win the boss and you roll into the next circle.
Tile composition matters because it tells you when to push and when to pull back. The five-monster stretches are where most of your HP swings happen, so you want to enter them with enough health to absorb a Fumble or two. The event tiles at positions 6 and 12 are inflection points — a well-timed shop, starlight box, or rest event can reset your run; a bad Wheel of Desire spin can end it. The gatekeeper at the end is always a fixed, known boss for that circle (the Ice Goliath on Circle 9, the Lord of Masks on Circle 8, down to the Shadow of Virgil on Circle 1), so you can plan HP and consumables around the specific mini-game that boss uses. Some tiles are also marked with a crown (👑) to signal an elite monster: elites hit harder but pay triple HP, so the optimal pattern is often to fight monsters until you are healthy, deliberately seek the elite, then heal up again before the gatekeeper.
The core loop, turn by turn
A turn breaks down into a small number of repeating steps. Understanding this loop is 90% of learning the game.
- Demon Duel (movement): Movement is decided by a rotating skill mini-game, not a plain die. You might whack demons, stop a timing slider in the green zone, or remember a path. Your score converts directly into how many tiles you advance. There are fifteen of these mini-games in rotation, so each turn feels different.
- Land on a tile: The board mixes monster tiles, event tiles, and — at the end of each stretch — a gatekeeper boss tile. What you land on decides what happens next.
- Resolve the tile: Fight a monster, trigger an event (rest, trap, blessing, curse, treasure, choice, shop, the Wheel of Desire, a cursed altar, or a starlight box), or challenge a gatekeeper.
- Collect rewards: Win a fight and you gain HP, soul stones, and sometimes a card. Stack wins for combo bonuses (3-in-a-row +15%, 5-in-a-row +30%, 7-in-a-row +50%) — the combo multiplier is the single biggest reward lever in the game, so protecting a streak matters more than any one fight’s payout.
- Repeat until the gatekeeper: Each Inferno circle is 12 tiles long. Reach the end and the gatekeeper boss fight triggers. Win to claim a guardian card and advance to the next circle.
A walk-through of one full turn
To make the loop concrete, here is a typical Circle 6 (Heresy) turn. You tap the board and the game launches a Demon Duel — say, a timing-slider movement game. You aim for the green zone, land a “good” score, and the game awards four tiles of movement. Your token lands on a monster tile: a flame-type enemy with power 4.
The combat mini-game launches — for fire that is an arithmetic challenge. You solve enough problems to earn a +2 bonus, the game rolls a D6 (it comes up 4), and your total of 6 beats the enemy’s 4 by a margin of 2. Because you won, you heal HP scaled by the margin, earn a soul stone (two on a “perfect” score), and your combo counter ticks up to 3, triggering the +15% reward bonus on top. A natural 6 instead of the 4 would have been a Critical (double healing); a natural 1 with a loss would have been a Fumble (double damage).
Now suppose the next Demon Duel is weak — you score only 2 and land on the Wheel of Desire. With a healthy HP buffer you might spin for the 15% jackpot or 25% payout, accepting the 30% “nothing” and 30% curse outcomes; with low HP you walk past it. Events do not break streaks (only losses do), so the combo is preserved as you plan the next move toward the elite or the gatekeeper.
How combat actually works
Combat is not a flat die roll against a stat block. When you land on a monster tile, the game launches a short skill mini-game matched to that monster’s element — number memory for ice, card-match for illusion, whack-a-mole for blood, arithmetic for fire, reflex catching for poison, and so on. Your performance sets a bonus that is added to a D6 roll, and that total is compared to the enemy’s power. Beat the power and you win; the margin of victory often scales your reward, which is why a “perfect” mini-game score is worth chasing even on enemies you can already beat.
A natural 6 on the die plus a win is a Critical (double healing). A natural 1 plus a loss is a Fumble (double damage). These two outcomes are the main source of swing in the game — a Critical can rescue a bad run, and a Fumble can kill a good one. Elite monsters, marked with a crown, have +2 power and pay triple HP rewards, so they are the highest-value targets on the board when you can beat them. Boss fights (gatekeepers, angels, archangels) each use a unique signature mini-game, so no two bosses test the same skill. The practical consequence is that the D6 matters less than your mini-game bonus: a player who consistently earns +3 can absorb an unlucky 1 or 2 and still beat power-4 enemies. And because element determines the mini-game, your personal skill profile matters — if you are weak at arithmetic, fire enemies on Circle 6 are genuinely more dangerous for you than the stats suggest.
Cards, curses, and consumables
Cards are the heart of long-term power. Guardian cards (Inferno), purification cards (Purgatorio), and celestial relics (Paradiso) are permanent for the run and stack with each other. Curse cards are the dark mirror — strong immediate effects with persistent penalties — and they are entirely optional: you only take one from a cursed altar or a bad gamble, so a cautious player can finish a run curse-free. Consumables are one-shot items bought from the Soul Merchant with soul stones or pulled from starlight boxes, usable mid-fight, and they include healing (Roasted Meat, Holy Potion), dice rerolls, and one-time buffs. Do not hoard them: a roasted meat that saves your run on Circle 3 is worth more than a Holy Potion you never use, and the most common beginner mistake is dying with a full inventory.
The shop itself deserves attention. The Soul Merchant stocks consumables, card upgrades (a guardian effect can be boosted +25% for 15 soul stones), and information items like the Crystal of Foreknowledge, which previews the next event. Soul stones are also your meta currency, so every stone you spend in-shop is a stone not spent on a permanent upgrade between runs. Early on, favour permanent upgrades over one-run consumables; once your meta build is mature, the shop becomes more attractive. A good rule of thumb: if you are below 60% HP approaching a gatekeeper, spend the consumable before the fight — entering a gatekeeper fight at full HP is worth more than the consumable you “saved.”
The three modes, briefly
Inferno is a survival horror about HP management and raw power. Purgatorio replaces combat pressure with moral choice events (sin projections) and a virtue stat, and introduces grace as a concept. Paradiso is about grace accumulation and multi-stage angelic trials. The full breakdown is in the dedicated Three Modes guide, but the short version: start with Inferno, because Purgatorio and Paradiso build on the cards and habits you learn there. A useful frame — Inferno tests execution under pressure, Purgatorio tests judgement, and Paradiso tests consistency.
Controls
Abyssos is designed for one hand on a phone. Almost every interaction is a tap or click. Movement mini-games use tap-to-stop or tap-the-target; monster battles use tap, drag, or type depending on the element. The language toggle lives in the top bar (🇰🇷 / 🇺🇸). There is no keyboard requirement, but some arcade mini-games accept Space and arrow keys.
A few non-obvious UI tips: tapping and holding on a card opens a longer description of its effects; the HP bar turns red and pulses when you enter the crisis zone (HP at or below 25%), which is your cue to consider a defensive consumable; and the combo banner only appears once you hit a 3-streak, so the first two wins of a streak are silent.
Seven tips for your first run
These are the habits that separate a first-run death from a first-run clear.
- Learn one movement mini-game at a time. There are fifteen, and you will see them in rotation. Focus on consistent “good” scores rather than chasing perfects on games you barely understand — a steady 3 tiles every turn beats alternating between 6 and 0.
- Respect the crisis zone. At low HP (25% or below) the screen edges flash red. A clutch win in crisis mode pays +30% rewards, but only take that fight if your mini-game is strong. The crisis bonus is tempting, but it does not offset a Fumble.
- Spend consumables before bosses, not after. Heal up so you enter the gatekeeper fight near full HP — boss penalties push you back and chip health on a loss. Entering Virgil on Circle 1 at 70% HP rather than 40% is often the difference between escaping and dying.
- Read the guardian card you just earned. Each guardian changes your build. The Helm of Wrath adds D6+1 but cuts healing 30%; the Heart of the Ice Goliath flatly reduces damage taken; the Collar of Cerberus lets you roll the battle die twice. Play to the card, not against it — if you took the Helm, switch to short fights and consumable healing rather than prolonged brawling.
- Never gamble your last HP. The Wheel of Desire and choice events can pay huge, but a 30% “nothing” outcome and a 30% curse outcome are both real possibilities. Only gamble with a buffer of at least 30% HP, and treat the cursed altar (strong effect plus persistent penalty) as a calculated choice, not a freebie.
- Prioritise elite monsters (👑) when you are healthy. Triple HP rewards accelerate a run more than any shop purchase. The flip side: never fight an elite in the crisis zone unless you are confident in that element’s mini-game — a Fumble against an elite can one-shot you.
- Buy meta upgrades between runs. Soul stones carry over via the meta system. The five permanent upgrades are HP Boost (+10 Max HP per level), Dice Stabilizer (raises the minimum die value), Starting Consumable, Starlight Box Quality, and Blessing of Revival (a one-time respawn at 0 HP). HP Boost, Dice Stabilizer, and Blessing of Revival are the highest-value early purchases and make every subsequent run easier.
Common beginner mistakes
Beyond the seven tips, a few patterns kill first runs over and over. Treating the Demon Duel as a coin flip is one: movement is a skill mini-game, so players who zone out land on worse tiles and bleed HP all run. Breaking a combo by taking a fight you might lose is another — the combo multiplier (up to +50% at a 7-streak) is worth more than almost any single reward, so once you are streaking, prefer safe fights and use an active ability to skip an elite in your worst element rather than risk the streak. A third is ignoring the gatekeeper’s specific mechanic: each gatekeeper has a known difficulty profile (the Avatar of Wrath speeds up +15% on every miss, the Storm Wraith randomises slider speed by ±40%, Cerberus needs two successes out of three timing attempts), so if you know you are weak at one, save a skip or consumable for that fight. And finally, do not hoard soul stones — the meta upgrades are permanent and compound, so spending 5 stones on the first level of HP Boost now beats sitting on 30 “for later.”
What to do next
Play Inferno once without worrying about optimisation — you are learning the fifteen movement mini-games, the fifteen combat mini-games, and the feel of the board. Your goal on run one is not to clear; it is to see every circle at least once and bank enough soul stones for a meta upgrade or two. On your second run, start thinking about card synergies (covered in the Guardian Cards guide) and which meta upgrades fit your playstyle.
A concrete first milestone: by the end of your third Inferno run, own at least two levels of HP Boost and one level of Dice Stabilizer. That combination smooths out the early circles enough that you can focus on the later gatekeepers, which is where most first clears stall. From there, the Blessing of Revival (30 stones) is the purchase that turns a “close call” into a finished run.