The file corresponds to Update #99 , which was released on November 6, 2017. This update was notable for being the first major patch in nearly two years and was long considered the "final" major version of the game before the surprise 10th-anniversary Update #100 in 2025. Key Features of Update #99 (v06.11.2017)
If you are comparing this to the recent , the 2017 version does not include: Nuclear Throne | Universal Split Screen
Fixed high-damage "insta-kills" from IDPD plasma by ensuring it respects player invincibility frames. Modding Compatibility
Safe spawns (ensuring players don't spawn in immediate danger) were made more reliable.
Disc weapons were adjusted to have more predictable bounding boxes, though they remain dangerous to the player.
: Both players can now select the same character in local co-op without needing bugs or glitches.
: Area, weapon, and mutation seeding were made significantly more consistent, making competitive runs (like Dailies and Weeklies) fairer.