Recruit soldiers and automate the grindMythos Slayer

The mechanics below were checked against the game code on September 9, 2026. Formulas describe the normal game, with rounding and exceptions noted where they affect play.

You open with a single click that does 2 damage, against a boss with 300 hit points. That is the whole game at the start. Gold from every hit goes into two piles: upgrades that make your own click hurt more, and units that fight for you whether or not you are at the keyboard. Forty bosses are stacked ahead of you and each one has roughly two and a half times the health of the one before, which is far faster than clicking alone can ever grow. The game is the argument between those two curves.

At a Glance

The Speed Test at the Door

Before the game proper there is a ten-second test. You give a name, then hit the spacebar (or tap the orb) as fast as you can until the timer runs out. Your hit count becomes a POWER number at a hundred times the count, so 60 hits reads as 6,000 power, and it buys you a starting purse of five gold per hit with a floor of 100 so that a slow run still walks away with something.

The power number is not balance, it is a greeting. It goes on a board against everyone else who has ever taken the test, and once at least thirty people have taken it the screen tells you where you landed among them. You can re-take it later from the same menu if you want another go at the number.

How to Play

1. Attack: spacebar or click on desktop, tap on mobile. Every hit damages the boss and earns gold
2. Summon: the "Summon" tab holds the 24 units. They attack on their own timers while the game is active, even when the Summon panel is closed
3. Upgrade: the "Upgrade" tab is a different list. This is where your own click, your crit and your gold rates live
4. Farm: a defeated boss respawns after about 1.5 seconds, so you can beat the same one repeatedly. Every fifth kill of the same boss pays a bonus coin worth ten times that kill's gold
5. Move on: "Next Boss" at the top right when you are ready. You can walk back down to an earlier boss at any time, and that is a normal thing to do, not a failure
6. Prestige: unlocks once you have cleared Boss 10

The Seven Upgrade Lines

These are the ones on the "Upgrade" tab, and they are worth reading rather than buying by price order, because two of them cap and the rest do not.

• Click Power — base damage is round(2 × 1.18^level × 1.3^{floor(level / 10)}). It starts at 2; rounding means the first upgrade still shows 2
• Crit Chance — starts at 5% and climbs 2 points a level to a hard ceiling of 75%
• Crit Damage — the multiplier starts at ×2 and adds 0.3 a level, with no ceiling
• Coin Pouch — adds 20% per level to the boss reward factor. Tap gold and Farmer/Villager income also use that reward as their base
• Gold Gain — adds 10% per level to the gold factor used for boss rewards, taps and gold-producing units
• Gold Rush — increases the tap-gold factor by 0.05 per level; this also affects Farmer and Villager income
• Gale Blessing — +5% attack speed per level for your units, capped at 40 levels

For average click damage, the critical-hit factor is 1 + chance × (critical multiplier − 1). Compare the gain from the next upgrade with its price. Reaching the crit cap does not make Crit Damage the best purchase in every situation.

Ten Weapons

Every tenth Click Power upgrade evolves the weapon in your hand. There are ten of them and you keep the last one for as long as you keep upgrading past it. These are not decorations: the tenth level in each block carries a ×1.3 damage step on top of the ordinary ×1.18, so a new weapon in your hand really does mean a harder hit.

Kitchen Knife, Assassin Dagger, Steel Shortsword, Knight's Longsword, Breakfang Axe, War Hammer, Greatslayer, Muramasa Blade, Dragonslayer, and Excalibur. Each one gets its own mouse cursor, its own colour on the hit effect and its own strike sound, which combines loaded audio samples with browser-generated effects. The War Hammer crushes instead of cutting and sounds like it. Ninety upgrades is a long way to go, and this is the game marking the distance in something other than a number.

Twenty-Four Units

The roster starts with a Farmer for 25 gold and ends with a Demon God for twenty-five trillion. Two of the twenty-four, the Farmer and the Villager, produce gold rather than damage. The rest fight, some in melee, some at range with arrows, bolts, bombs and cannon shells that actually travel, and the dragons orbit the boss while the angels hover at fixed positions. The last stretch of the roster is Ancient Jade Dragon, Awakened Crimson Dragon, Seraph and Demon God, and by then a single unit is doing more damage per swing than your entire early game produced.

Prestige, and When To Do It

Prestige unlocks after clearing Boss 10. It resets gold, units, upgrades and kill counts, and multiplies your existing permanent gold bonus by 1 + 0.4 × the highest boss number cleared in the current cycle. Your first prestige at Boss 10 gives ×5; at Boss 20 it gives ×9. Two Boss-10 prestiges compound to ×25.

A deeper run earns a larger multiplier, but takes time. If the next boss is close, pushing may help; if progress has stalled, restarting can be useful. The multiplier alone does not prove one timing is always best. Prestige keeps your current boss cycle, so a reset in cycle 2 still faces cycle-2 health.

What Happens After Boss 40

Boss 40 is Cthulhu. The first full clear opens the credits. Use Next Boss from Boss 40 to begin the next cycle: its health factor is ×50 and its gold factor is ×6 compared with the previous cycle, before rounding and other bonuses. Clearing the boss alone does not automatically start that cycle.

The Leaderboard

The trophy button opens two online leaderboards, each showing the top 100: cumulative damage and POWER, the score from the ten-second tapping test. If the online damage board cannot be reached, the game shows the damage records saved on your device and labels them as local records. The POWER board requires an online connection; if it cannot load, it shows an error with no scores so that damage records are never mistaken for POWER scores.

Tips

• Compare the current and next damage values on the weapon card; rounding can make an early upgrade show no immediate gain.
• Farm a boss you can beat consistently. Every fifth kill adds ten times the normal kill reward, for eleven times in total.
• Compare upgrade cost with additional damage or income instead of spending solely because a button becomes affordable.
• The Farmer and Villager generate gold without manual tapping while the game is active.
• Check the displayed before-and-after gold bonus before choosing Rebirth.

How the Numbers Fit Together

Boss health grows by a factor of 2.42 per boss within a cycle, while the base kill reward grows by 2.05. This makes later fights more demanding relative to their reward. Upgrades, repeat-kill bonuses and prestige provide ways to make progress. See the balance walkthrough for worked examples.

FAQ

Can I play on a phone?

Yes. You tap the screen instead of pressing the spacebar, and the unit layout switches to a portrait arrangement on narrow screens.

Is it in English?

Yes, and in Japanese and Chinese, including the leaderboard. The game remembers which one you picked.

Can my save data be lost?

Progress is saved in your browser. Clearing site data can erase it; it does not automatically transfer to another device.

Does progress from the embedded version on this page carry over to the fullscreen version?

The Play Fullscreen button expands this same running game without reloading it. Opening a separate tab is different: browser privacy settings may keep embedded and direct-tab saves separate.

When should I prestige?

Compare the time needed for another boss with the benefit of restarting. Each prestige multiplies your existing gold bonus by 1 + 0.4 times the highest boss cleared in the current cycle: 5x at Boss 10 or 9x at Boss 20.

Does the game keep earning while the tab is closed?

Units earn while the game is running, but background tabs can pause or throttle its animation loop. There is no offline earnings calculation for time spent with the page closed. Keep the game visible for dependable progress.

What happens when I beat all 40 bosses?

The first full clear opens the credits. Next Boss from Boss 40 starts another cycle with a 50x health factor and a 6x gold factor.

Do I have to take the speed test?

It only appears on your first visit and you can skip naming yourself. You can re-take it later from the player menu.

Credits

Boss art and design by:
· @Kome_to_Matsuri
· Ankimo (Innsmouth Project)