Nostalgic classic that still holds up
Mentioned in ~1 in 5 positive reviews
“one of the greatest roguelites ever created. Holds up even to this day.”
Steam review · 13.2 h played ↗
The Binding of Isaac
Worth buying? What 300 Steam reviews say.Worth buying? Here’s what 300 Steam reviews actually say.
Very Positive · 94%Very Positive · 94%Edmund McMillen, Florian Himsl2011Action Roguelike · Roguelike · Action
The verdict
The original Flash Isaac is a tough, addictive, cheap roguelike with great music and replayability, but it's dated, capped at 30 FPS and unfair at times. Most players say to buy Rebirth instead.
Great for
Fans and nostalgic players who want a cheap, brutally hard Isaac and don't mind the Flash limits
Main risk
Buying it by mistake or expecting Rebirth, then facing 30 FPS, no controller support and unfair difficulty
What changed in the last 30 days
56 recent reviews
Recent negative reviews stress that in 2026 the game feels dated: 30 FPS, 4:3 ratio, poor controls, and urge buying Rebirth. Evidence is modest and no specific update is visible.
56 recent reviews
What players love
Addictive, highly replayable roguelike
Mentioned in ~1 in 5 positive reviews
“The roguelike loop is stupidly addictive, the item synergies are absolutely unhinged and dying on the last boss for the 30th time in a row genuinely builds character.”
Steam review · 139.7 h played ↗
Challenging, rewarding difficulty
Mentioned in ~1 in 8 positive reviews
“Though the steep difficulty curve might frustrate some, it ultimately makes victory feel deeply rewarding.”
Steam review · 69.4 h played ↗
Harder, purer take for veterans
Mentioned in ~1 in 9 positive reviews
“Classic TBoI is personally harder for me compared to Rebirth and beyond.”
Steam review · 30.4 h played ↗
Great soundtrack and dark art style
Mentioned in ~1 in 9 positive reviews
“The OST's ambient and ghastly mood nails the nasty horror aesthetic that goes along with Edmund's art direction here.”
Steam review · 7.6 h played ↗
Cheap price for lots of content
Mentioned in ~1 in 12 positive reviews
“this game is packed with content and is where it all started.”
Steam review · 522.4 h played ↗
What players complain about
Rebirth is better; buy that instead
Mentioned in ~1 in 3 negative reviews
“Everything TBOI does, TBOI:R does better.”
Steam review · 48.4 h played ↗
Unfair room layouts and enemy balance
Mentioned in ~1 in 6 negative reviews
“Some rooms where you have to take damage no chance to respond.”
Steam review · 73.2 h played ↗
30 FPS lock, lag and Flash-engine issues
Mentioned in ~1 in 7 negative reviews
“it just runs like ass. and its forced 4:3 aspect ratio. and its looked to 30 fps”
Steam review · 47 h played ↗
Display, bugs and achievement problems
Mentioned in ~1 in 8 negative reviews
“it's 2025 and fullscreen doesnt work”
Steam review · 1.1 h played ↗
No controller support or key rebinding
Mentioned in ~1 in 10 negative reviews
“How does a game this successful not have controller support or the ability to skip the opening cutscene?”
Steam review · 0.5 h played ↗
Eternal/hard mode is brutal and unbalanced
Mentioned in ~1 in 12 negative reviews
“Eternal mode is absolute bs.”
Steam review · 175.7 h played ↗
System requirements
From the Steam store page
Steam Deck: Playable50 MB
Minimum
OSWindows XP, Vista, 7
Processor2.5 GHz
Memory1GB
GraphicsDirect X9.0c Compatible Card
Storage50MB
OSWindows XP, Vista, 7
Processor2.5 GHz
Memory1GB
GraphicsDirect X9.0c Compatible Card
Storage50MB
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− Unfair difficulty, adventurer minibosses, no healing
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Overwhelmingly Positive+ Holo House minigames add variety
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Overwhelmingly Positive+ Great blend of roguelite combat and cult management
− Shallow, mediocre combat and management
analyzed 1 d ago
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