The 1.2 line at a glance — v1.2.0.0 (November 2, 2026) launched with the DLC and introduced the Item Set toggle; v1.2.0.1 (November 3, 2026) raised the Mutagen base drop rate from 2% to 3% and fixed Survivor, co-op and shop interface issues.

v1.2.0.0: The Item Set Toggle

The headline feature of the 1.2 launch patch is a content switch, not new content: in the character select screen, players can now enable or disable Primal Dread content through an Item Set toggle.

Why that matters in practice:

  • Base-game purists can keep unlock and item pools untouched — useful for challenge runs or players who want the pre-DLC experience intact.
  • DLC owners get the Jungle map, the 10 new Characters, 17 new Crates & Weapons, 40 new items and the Evolution system only when the set is switched on.
  • Co-op groups can align on one setting before a run, instead of mixed pools.

The toggle applies to DLC content as a set; per-item granularity is not documented in the official notes.

v1.2.0.1: The Mutagen Buff

The follow-up hotfix made one balance change with real build consequences: the Mutagen base drop rate went from 2% to 3% — a 50% relative increase in how often the Mutation path’s resource appears.

Practical reading:

  • Mutations that duplicate item effects should ramp more reliably, especially in early waves.
  • The change affects the drop rate only; what Mutagens do once you have them is unchanged.
  • If you theorycrafted drop expectations on day one (November 2), re-do the math with the 3% figure.

The same patch fixed issues in Survivor mode, co-op, and shop interfaces — no content additions.

What Did NOT Change

To keep expectations straight, the 1.2 line did not:

  • add or remove any of the 10 characters, 17 weapons or 40 items shipped with the The DLC;
  • touch the Enemy Army or wave structure in any way the official notes describe;
  • introduce a public test branch — the Playtest? covers why there is no beta to opt into.

1.2 Update FAQ

What does the 1.2 update do for Primal Dread?

v1.2.0.0 added the Item Set toggle in character select so DLC content can be enabled or disabled; v1.2.0.1 then raised the Mutagen base drop rate from 2% to 3% and fixed several interface issues.

Do I need to enable the DLC after buying?

Use the Item Set toggle in character select to switch Primal Dread content on (or off). The exact default state after purchase is not specified in the official notes — check the toggle before your first run.

Is 1.2 a free update?

The patch itself ships with the base game for free, but the Primal Dread content it toggles requires owning the DLC.