Idle Slayer

Idle Slayer

Fair · Strategy · 2020

Steam Deck Verified

The verdict

NO RUSH.

Free and middling. Worth a look if the genre is yours.

Length
54h
Price
Free to play
Reviews
85% positive
Length
54h
main story (HowLongToBeat)
Completionist
643.8h
100% (HowLongToBeat)
$/hr
Free
price ÷ main-story length
Price
Free
Reviews
85%
10,866 reviews, as of Sep 19
Players
750K
owners, SteamSpy estimate
Released
2020

Minimum on the Steam store: 1 GB of memory, 512 MB, 102 MB of storage. Windows only.

Start from nothing and grow into a legendary Slayer. Explore countless dimensions, collect souls, unlock powerful upgrades, craft powerful gear, defeat epic bosses, and enjoy a deep idle RPG with active and offline progression.
Description from the Steam store page.

What drives the score

How to read this

Grades run S to D, read from the buyer's side. ▲ marks a lift, ▼ a drag or a dock, ? an input we do not have, • a fact this genre's score does not use. How the grades work

What we assumed
  • Steam lists in-app purchases but we have no detail on them. Small caution applied.
Raising the score
ValueFree
Price per hour of game. It moves the score inside the ceiling reviews set
Engagement36% finish
How far players actually get (achievements), a top-end bonus
Holding it back
Reviews85% positive
Gates the score. Weak reviews cap it, and nothing reaches BANGER without strong ones Scored as 84% after the small-sample adjustment
Reach750K+ owners
How many own it, by SteamSpy's estimate (an old snapshot). A free game has no price to weigh, so this is its value read
MonetizationIn-app purchases
Steam lists in-app purchases and nothing more is known, so a small haircut
For context
Length54 hours
How much game you get. Hours feed the value per dollar
RefundsFree
A free game cannot be refunded, so the label never applies
AI contentNone disclosed
From the developer's own Steam disclosure. No disclosure is not proof of none, so it does not move the score

The value story

On value it sits in the top 6 percent of its genre. It is better reviewed than 88 percent of its genre. Among the games that feel like it, Mr.Mine (free, scores 77) beats it on value, while it beats Idle Cave Miner (free, scores 51).

Steam's global achievement data puts 36 percent of players at this game's ending achievement. The median game this site can measure sits at 15.

54 hours to finish it, 644 to exhaust it. The completionist tail is 12 times the campaign.

It carries Valve's Deck Verified rating, which is the one that means it just works.

The drop-off

81% start to 36% finish
050100rarestfirst achievement

Steam counts a larger share of its players at the ending achievement than it does for most games this site can measure. Steam global achievements

What players say

Not a fan of the pacing of this game. Certain long grinds yielding terrible buffs like ''here's a 5% coin buff after your week long grind), not always obvious where to go, lots of stalling and confusion. Too many quests that cost RIDICULOUS amounts, like astral keys, for such low buffs. Quests often never hint at their rewards, but almost always they're garbage. Stagnates very quickly. Seasonal events could be more...
NMNMNot recommendedafter 1803h15 found this helpfulRead on Steam
Don't be fooled by the amount of hours played, I'm just a dumb completionist. The game is complete garbage and I'd get a refund if I hadn't already spent a bit too much time in it. It attempts to be both and idle and an incremental game, but makes both feel awful. It's someone learning gamedev and sticking every new thing they learn onto it. Stay away.
ZakhanisNot recommendedafter 141h5 found this helpfulRead on Steam
I thought *Idle Slayer* was just going to be another simple idle game where you click a few buttons, watch numbers go up, and forget about it. I was wrong. At first, it looks incredibly simple. You run through a pixel-art world, collect coins, defeat enemies, and buy upgrades. Then you realize you've been playing for three hours. The game does something surprisingly clever with the idea of an idle game. You can...
LachamRecommendedafter 8.4h5 found this helpfulRead on Steam

Steam reviews, mixed to match its Steam ratio and rotated daily. Opinions are theirs.

No data upstream: critic score (Metacritic).

Cite this score

BANG Score badge
Idle Slayer scores 65/100 on the BANG Score (fair value) as of Oct 2, 2026. The BANG Score rates what a game is worth for the money. Via Steam BANGERS. https://steambangers.com/game/1353300/idle-slayer
Embed the live badge

Reviews set the ceiling, and the size of the player base moves the BANG Score inside it. How it works, and where it is weak → Steam reviews as of Sep 19.

A number here look wrong? Tell me and I will check the inputs.

Tags

Steam user tags as SteamSpy recorded them

Details

DeveloperPablo Leban
PublisherPablo Leban
GenreStrategy
Released2020
Achievements651