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Slay All Bosses: Idle, is a short incremental RPG. Cut down waves of enemies, defeat powerful bosses, and rapidly grow stronger through character skill trees, weapon and skill upgrades, and equipped passive abilities, all on your path to becoming the ultimate hero.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Official stores with direct support.
Slay All Bosses: Idle is an incremental RPG where you take a lowly level 1 hero, barely capable of handling a pack of lesser goblins, and forge them into a legendary slayer able to defeat the deadliest of foes.
Your selected hero fights automatically, attacking enemies and unleashing powerful Weapon Skills. Weapon Skills are tied to the weapon you have equipped, but after enough uses they are permanently learned, allowing you to freely swap weapons and experiment without losing progress.
After every battle, you earn currency used to advance your hero’s skill tree. Skill trees feature a variety of nodes, from raw stat boosts to gameplay-altering passive abilities that redefine how your hero plays.
Each time your hero levels up, they gain Skill Points used to unlock Weapon and Skill Upgrades.
Weapon Upgrades provide additional stat bonuses when equipped.
Skill Upgrades allow you to enhance your learned skills even further. You can add status effects, strike all enemies, and/or reduce cooldown times. Spend Skill Points to transform skills into devastating tools of destruction.
Your hero will face enemies armed with lethal skills and dangerous status effects. Equip accessories to gain passive bonuses and resistances. After enough battles, you’ll permanently learn these passives and can equip them freely, limited only by your hero’s Ability Points (AP). Mix and match learned abilities to adapt to any challenge.
Strategic auto-battles.
15 challenging boss battles.
A satisfying progression loop that seamlessly blends character, weapon, and skill upgrades.
Lowest tracked price: PLN 14.40 (Jul 7, 2026) · current best: PLN 18.00.
63% positive reviews all-time · 7 peak players in the last 30 days.
Right now the cheapest offer for Slay All Bosses: Idle is PLN 18.00 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Slay All Bosses: Idle is PLN 14.40 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Slay All Bosses: Idle peaked at 7 concurrent players on Steam in the last 30 days (highest on Jul 9, 2026). The player chart on this page updates daily.
Create a free price alert on this page and KingsPrice will email you when Slay All Bosses: Idle drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
