What is the difference between after birth and afterbirth plus?

Question

It's 33% off until January 10 if you own Afterbirth. Afterbirth+ adds new items, enemies, unlockables, achievements, endings and an extra character, but what makes it extra special is it also adds mod tools and supports user-made mod. January 4, 2017:

Hagrid P Hazard · Accepted Answer

It's 33% off until January 10 if you own Afterbirth. Afterbirth+ adds new items, enemies, unlockables, achievements, endings and an extra character, but what makes it extra special is it also adds mod tools and supports user-made mod. January 4, 2017:

What is the difference between after birth and afterbirth plus?

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