* Projectiles fired by The Abandoned's charge now has larger free space to dodge.
* Unborns spawned by Seija + C Section now has HP of 10x damage amount of the fetus tear.
* 遗忘伞的冲刺发射的弹幕现在间隔更大。
* 正邪+剖腹产生成的死胎现在有胎儿泪弹伤害10倍的血量。

* Added Item "Blizzard".
* 加入了道具“暴雪”。

* Added Challenge "Rainbow Market".
* 加入了挑战“月虹市场”。

* Now a doll of Isaac will be automatically spawned at the starting room if player is corrupted by Hourai or Tainted Hourai.
* 现在如果角色被蓬莱或者堕化蓬莱污染，则会在初始房间内自动生成一个以撒的人偶。

* Doremy's spell card "Butterfly 'Butterfly Supplantation'" now has no safe point.
* Fixed an issue that Doremy's spell card name may not be fully shown if name is too long.
* 哆来咪的符卡“蝴蝶「取而代之的蝴蝶」”不再有安定点。
* 修复了哆来咪的符卡名可能会因为名称过长导致显示不全的问题。

* Added Item "Nitre".
* 加入了饰品“硝石”。

13.20.2-2023.12.1
* Fixed an issue that Curse of Blood won't stack.
* 修复了血之诅咒不叠加的问题。

* Fixed an issue that Rune Sword + Soul of Jacob and Esau won't clone items with the unique quality in player's inventory.
* 修复了符文佩剑+雅各和以扫的魂石无法复制玩家身上具有唯一品质的道具的问题。

* Rune swords can now only be inserted with up to 6 runes, which can turn previous runes into pickups, and the passive effects of all runes have been buffed.
* Fixed an issue where Eye of Chimera would cause background sprite issues when viewing items with an ID of 256 times (such as displaying the background as a dead Hourai when viewing Jeweled Branch).
* To commemorate the interesting bug mentioned above, add a small Easter egg to the behavior of Eye of Chimera in viewing Jeweled Branch.
* 符文佩剑现在最多只能镶嵌6个符文，可以将之前的符文变为掉落物，并且所有符文的被动效果都获得了加强。
* 修复了嵌体怪之眼查看ID是256倍数的道具时会导致背景错误的问题（如查看蓬莱玉枝会将背景显示为蓬莱）。
* 为了纪念上述有趣的bug，为嵌体怪之眼查看蓬莱玉枝的行为添加一个小彩蛋。

* Fixed an issue that active items with choices like Wish or Censer of Illness can sometimes select multiple times.
* Fixed an issue that use Spirit Cannot in a challenge will make the run into no challenges.
* 修复拥有选项的主动道具，如许愿和病神香炉，有时可以连续选择多次的问题。
* 修复在挑战中使用气功炮会导致整局游戏变为无挑战的问题。