Isaac's 15th Birthday Sale ends in

15th Birthday Sale ends

--d--h--m--sShop the sale →

66.6%off, at most 15days of sale 1free card with every order

Isaac turns 15!

Birthday
Drop!

We’re celebrating 15 years of descending into the basement with 15 days of sales and the brand-new, free Headless Horseman Four Souls Promo card included with every Isaac and Mewgenics order.

Up to 66.6% offEnds October 12

A Treasure Room Ahead!The Boss Room Awaits…

Treasure room

Loot for a steal

Celebrate 15 years of Isaac with 15 days of great prices! As they say, if you look after the pennies, the dimes take care of themselves!

66.6% off:Angelic Starter Sets

The most cost-effective and holy way to start your Four Souls run!

25% off:Other Game Bundles

25% off:Merch

Pins, Figures, Plushes, and more available now!

Boss room

The Birthday Drop

Bosses from both The Binding of Isaac and Mewgenics block your way to the next floor, but luckily, both come with an awesome new Headless Horseman Promo Card! Which will you choose?

Limited hoodie

The Headless Horseman, on a black hoodie. A limited run for Isaac's 15th.

$69.99 Shop the hoodie

Mewgenics Mystery Minis: Series One

Mewgenics mini-bosses as 4.5-inch plush keychains, each with a collector's art print. Which one's inside? That's the fun.

Pre-order · ships February 2027 Full 8-box displays Stacy is Epic · 1 in 72

Magnus common · 1/7
Fenrir common · 1/7
Lucy common · 1/7
Maisie common · 1/7
Dack common · 1/7
Marshmallow common · 1/7
Pebbles uncommon · 1/14
Gun rare · 1/21
Stacy epic · 1/72

Every display has one of each Common, plus at least one Uncommon or better.See the Minis · $199.99

Library

15 years in the basement

From flash, to rebirth, to the tabletop, and beyond: Isaac’s tears carry a decade and a half of legacy

2011
The Flash original

Edmund McMillen and Florian Himsl release The Binding of Isaac on Steam on September 28, made in about three months.
Isaac's mother lived alone…
2012
Wrath of the Lamb

The first expansion adds plenty of items, floors, and endings to an already stellar indie darling.
+ more basement
2013
Two million

The little Flash game passes two million copies sold.
and counting
2014
Rebirth

With the help of Nicalis, Rebirth arrives on PC, PS4, and PS Vita. The next big chapter in Isaac’s story.
a new run begins
2015
Afterbirth

Rebirth’s first DLC adds a wide variety of floors, bosses, items, and more!
+1 floor
2017
Afterbirth+

Afterbirth+ adds yet more content to the game, while also helping launch Isaac on the Nintendo Switch!
portable tears
2018
Four Souls

The card game's Kickstarter funds in an hour and a half and closes with 38,335 backers.
first to four souls wins
2021
Repentance + Requiem

The final chapter lands in March, and Four Souls: Requiem pulls in 47,854 backers.
sacrifice, betrayal, hoarding
2024
Repentance+

Repentance+ now comes with Online co-op, allowing you to fight your way through your favorite rooms and bosses with a friend!
bring a friend
2026
15 years old

On September 28, Isaac turns 15. And on top of all that history, Edmund's Mewgenics came out this year.
happy birthday, kid
Nov
Repentance+ Online

Repentance+ Online is bolstered and polished, refining the newest way to play the little indie darling that grew into one of the greatest and most recognizable games of all time.
coming soon

96%positive on 164,000+ Steam reviews of Rebirth
717items in Repentance
34playable characters
86,189Four Souls Kickstarter backers across two campaigns

Sources: Steam (Rebirth reviews, read Sep 25, 2026), Kickstarter campaign totals, Repentance item and character counts.

Secret room

You found a free card

Until October 31, every Binding of Isaac and Mewgenics order comes with a free Headless Horseman Four Souls promo card.

Start looting

Offer runs September 28 – October 31, 2026, on Binding of Isaac and Mewgenics orders.

The shop

Everything Isaac & Mewgenics

All of our amazing Binding of Isaac and Mewgenics merch in one convenient place!

Everything here qualifies: a free Headless Horseman promo card ships with every Binding of Isaac or Mewgenics order until October 31. Limit 1 per order.