Patch notes
Patch notes archive
115 versions of the game, from Alpha 5 (December 14, 2013) to V3.3 (October 5, 2026), with the notes of every build the developer announced on Steam. Item, zombie and perk names in the notes link to their pages; the V3.3 changelog groups the changes of the current version.
115
| Version | Released | Builds | Added | Changed | Fixed | Changes |
|---|---|---|---|---|---|---|
| V3.3 | 2026-10-05 | 2 | 2 | 4 | 14 | 20 |
| V3.2 | 2026-08-26 | 2 | 5 | 13 | 15 | 33 |
| V3.1 | 2026-07-27 | 3 | 6 | 14 | 28 | 48 |
| V3.0.1 | 2026-07-13 | 2 | - | 1 | 19 | 20 |
| V3.0 | 2026-06-29 | 6 | 12 | 23 | 53 | 88 |
| V2.6 | 2026-04-01 | 3 | 8 | 33 | 27 | 68 |
| V2.5 | 2025-12-18 | 6 | 53 | 93 | 100 | 246 |
| V2.4 | 2025-10-02 | 3 | - | - | 12 | 12 |
| V2.3 | 2025-09-09 | 4 | 18 | 44 | 25 | 87 |
| V2.2 | 2025-08-07 | 3 | 6 | 23 | 14 | 43 |
| V2.1 | 2025-07-14 | 3 | 9 | 14 | 23 | 46 |
| V2.0 | 2025-06-27 | 6 | 142 | 225 | 263 | 630 |
| V1.4 | 2025-04-11 | 2 | - | 1 | 7 | 8 |
| V1.3 | 2025-02-12 | 4 | 4 | 5 | 16 | 25 |
| V1.2 | 2024-12-10 | 4 | 13 | 26 | 42 | 81 |
| V1.1 | 2024-10-01 | 3 | 22 | 81 | 127 | 230 |
| V1.0 | 2024-07-25 | 9 | 61 | 128 | 207 | 396 |
| Alpha 21.2 | 2023-11-20 | 5 | 34 | 44 | 79 | 157 |
| Alpha 21.1 | 2023-08-10 | 5 | 24 | 85 | 119 | 228 |
| Alpha 21 | 2023-06-29 | 5 | 21 | 47 | 49 | 117 |
| Alpha 20.7 | 2023-04-20 | 1 | - | - | - | - |
| Alpha 20.6 | 2022-08-16 | 3 | 5 | 4 | 57 | 66 |
| Alpha 20.5 | 2022-05-16 | 2 | 2 | 1 | 8 | 11 |
| Alpha 20.4 | 2022-04-25 | 3 | 6 | 11 | 32 | 49 |
| Alpha 20.3 | 2022-02-23 | 1 | - | - | - | - |
| Alpha 20.2 | 2022-02-07 | 2 | - | - | 3 | 3 |
| Alpha 20.1 | 2022-02-01 | 3 | 2 | 55 | 91 | 148 |
| Alpha 20 | 2021-12-21 | 7 | 9 | 40 | 69 | 118 |
| Alpha 19.6 | 2021-07-30 | 1 | 1 | - | 6 | 7 |
| Alpha 19.5 | 2021-05-28 | 2 | 6 | 10 | 9 | 25 |
| Alpha 19.4 | 2021-03-10 | 2 | 3 | 3 | 13 | 19 |
| Alpha 19.3 | 2020-12-21 | 4 | 6 | 8 | 20 | 34 |
| Alpha 19.2 | 2020-10-20 | 3 | 6 | 9 | 8 | 23 |
| Alpha 19.1 | 2020-09-22 | 2 | 7 | 10 | 53 | 70 |
| Alpha 19 | 2020-08-19 | 10 | - | - | - | - |
| Alpha 18.4 | 2020-03-04 | 1 | - | - | - | - |
| Alpha 18.3 | 2020-01-24 | 1 | - | - | - | - |
| Alpha 18.2 | 2019-12-04 | 1 | - | - | - | - |
| Alpha 18.1 | 2019-11-12 | 1 | - | - | - | - |
| Alpha 18 | 2019-10-25 | 1 | - | - | - | - |
| Alpha 17.4 | 2019-05-31 | 2 | - | - | - | - |
| Alpha 17.3 | 2019-05-14 | 2 | - | - | - | - |
| Alpha 17.2 | 2019-02-27 | 3 | - | - | - | - |
| Alpha 17.1 | 2019-01-18 | 3 | - | - | - | - |
| Alpha 17 | 2018-12-22 | 9 | - | - | - | - |
| Alpha 16.4 | 2017-10-27 | 1 | - | - | - | - |
| Alpha 16.3 | 2017-08-31 | 1 | - | - | - | - |
| Alpha 16.2 | 2017-08-04 | 1 | - | - | - | - |
| Alpha 16 | 2017-07-13 | 7 | - | - | - | - |
| Alpha 15.2 | 2017-02-04 | 2 | - | - | - | - |
| Alpha 15.1 | 2016-12-07 | 1 | - | - | - | - |
| Alpha 15 | 2016-10-06 | 1 | - | - | - | - |
| Alpha 14.7 | 2016-06-20 | 1 | - | - | - | - |
| Alpha 14.6 | 2016-04-30 | 1 | - | - | - | - |
| Alpha 14.5 | 2016-04-07 | 1 | - | - | - | - |
| Alpha 14.4 | 2016-04-04 | 1 | - | - | - | - |
| Alpha 14.3 | 2016-04-02 | 2 | - | - | - | - |
| Alpha 14.2 | 2016-03-30 | 1 | - | - | - | - |
| Alpha 14.1 | 2016-03-29 | 1 | - | - | - | - |
| Alpha 14 | 2016-03-26 | 1 | - | - | - | - |
| Alpha 13.8 | 2016-02-05 | 1 | - | - | - | - |
| Alpha 13.6 | 2015-12-25 | 1 | - | - | - | - |
| Alpha 13.5 | 2015-12-22 | 1 | - | - | - | - |
| Alpha 13.4 | 2015-12-18 | 1 | - | - | - | - |
| Alpha 13.3 | 2015-12-17 | 1 | - | - | - | - |
| Alpha 13.2 | 2015-12-15 | 1 | - | - | - | - |
| Alpha 13.1 | 2015-12-14 | 1 | - | - | - | - |
| Alpha 13 | 2015-12-12 | 2 | - | - | - | - |
| Alpha 12.5 | 2015-08-23 | 1 | - | - | - | - |
| Alpha 12.4 | 2015-07-23 | 1 | - | - | - | - |
| Alpha 12.3 | 2015-07-17 | 1 | - | - | - | - |
| Alpha 12.2 | 2015-07-13 | 1 | - | - | - | - |
| Alpha 12.1 | 2015-07-08 | 1 | - | - | - | - |
| Alpha 11.6 | 2015-06-12 | 2 | - | - | - | - |
| Alpha 11.4 | 2015-04-29 | 1 | - | - | - | - |
| Alpha 11.3 | 2015-04-17 | 1 | - | - | - | - |
| Alpha 11.2 | 2015-04-09 | 2 | - | - | - | - |
| Alpha 11.1 | 2015-04-04 | 1 | - | - | - | - |
| Alpha 11 | 2015-04-02 | 1 | - | - | - | - |
| Alpha 10.4 | 2014-12-18 | 3 | - | - | 5 | 5 |
| Alpha 10.3 | 2014-12-12 | 2 | - | - | - | - |
| Alpha 10.2 | 2014-12-01 | 1 | - | - | - | - |
| Alpha 10.1 | 2014-11-25 | 1 | - | - | - | - |
| Alpha 10 | 2014-11-22 | 2 | - | - | - | - |
| Alpha 9.3 | 2014-09-08 | 1 | - | - | - | - |
| Alpha 9.2 | 2014-09-04 | 1 | - | - | - | - |
| Alpha 9.1 | 2014-08-22 | 1 | - | - | - | - |
| Alpha 9 | 2014-08-15 | 1 | - | - | - | - |
| Alpha 8.8 | 2014-07-23 | 2 | - | - | - | - |
| Alpha 8.7 | 2014-07-09 | 1 | - | - | - | - |
| Alpha 8.6 | 2014-06-14 | 1 | - | - | - | - |
| Alpha 8.5 | 2014-05-31 | 1 | - | - | - | - |
| Alpha 8.4 | 2014-05-30 | 1 | - | - | - | - |
| Alpha 8.3 | 2014-05-28 | 1 | - | - | - | - |
| Alpha 8.2 | 2014-05-22 | 1 | - | - | - | - |
| Alpha 8.1 | 2014-05-10 | 1 | - | - | - | - |
| Alpha 8 | 2014-05-06 | 1 | - | - | - | - |
| Alpha 7.11 | 2014-04-22 | 1 | - | - | - | - |
| Alpha 7.10 | 2014-04-19 | 1 | - | - | - | - |
| Alpha 7.9 | 2014-04-08 | 1 | - | - | - | - |
| Alpha 7.8 | 2014-04-05 | 1 | - | - | - | - |
| Alpha 7.7 | 2014-03-19 | 1 | - | - | - | - |
| Alpha 7.6 | 2014-03-16 | 1 | - | - | - | - |
| Alpha 7.5 | 2014-03-09 | 1 | - | 1 | 4 | 5 |
| Alpha 7.4 | 2014-03-08 | 1 | 1 | 2 | 5 | 8 |
| Alpha 7.3 | 2014-03-07 | 1 | - | - | - | - |
| Alpha 7.2 | 2014-03-04 | 1 | - | - | - | - |
| Alpha 7.1 | 2014-03-02 | 1 | - | - | - | - |
| Alpha 7 | 2014-02-28 | 1 | - | - | - | - |
| Alpha 6.4 | 2014-02-06 | 1 | - | - | - | - |
| Alpha 6.3 | 2014-02-03 | 1 | - | - | - | - |
| Alpha 6.2 | 2014-01-30 | 1 | - | - | - | - |
| Alpha 6.1 | 2014-01-18 | 1 | - | - | - | - |
| Alpha 6 | 2014-01-16 | 2 | - | - | - | - |
| Alpha 5 | 2013-12-14 | 2 | - | - | - | - |
Changes are the distinct lines under the Added, Changed, Fixed and Removed headings of a version's announcements. Before Alpha 17 the Steam posts only pointed to the developer's forum, so those versions have dates but few or no lines.