Official patch notes // version 0.4.1

Demo Patch 0.4.1 - Bug hotfix

May 3, 2026Official Steam announcementSteam build not published

BatoForge analysis // Bugfixes

What this update means for your run

Demo 0.4.1 fixes Thorntail gaining buffs from enemy-applied Poison, allows multiple Ancient Plumes to trigger together, and aligns Wishwash’s battle Trinket reward with the reward kept after battle.

  • Upgrade Disc stops destroying itself without effect when the purchased copy already has a merge ready.
  • High-rating players can face a wider range of opponents after an incorrect matchmaking restriction is removed.

Before using an older guide

Swim Coach’s ability also extends to level 4 Water units in this version. That belongs to its old speed effect, before the later daily-unit rework.

BatoForge analysis of the announcement below. Read the official Steam source ↗

Official notes. Read the full announcement below for the complete changes.

Batomon mentioned in this post

From the announcement

Some mentions are fixes or explanations rather than balance changes. Read the full announcement for context.

Official text

Thorntail ↗

Fixed Thorntail getting buffed from opponents inflicting poison.
Official text

Wishwash ↗

Fixed a bug with Wishwash's ability where the trinkets it gives you in battle aren't the same as the one you kept for the rest of the run.
Read the original official announcement

Official Steam source ↗ · Published May 3, 2026

Small bugfix patch:

- Fixed a bug where players with high matchmaking rating were still playing with a very limited matchmaking pool.

- Fixed Thorntail getting buffed from opponents inflicting poison.

- If you have Ancient Plumes, they can now trigger all at once, instead of triggering only 1 per battle.

- Fixed Upgrade Disc destroying itself without doing anything if you already buy a monster that already has a level up merge setup (i.e. you already have 2 of the same species of the monster you are going to buy)

- Fixed a bug with Wishwash's ability where the trinkets it gives you in battle aren't the same as the one you kept for the rest of the run.

- Changed Swim Coach's ability to affect level 4 water monsters as well.