Batomon Showdown How to Get Level 4 — Merges, Events and What Changes

Level 4 is the ceiling of the normal merge ladder in Batomon Showdown, and reaching it is less about grinding and more about how a run handles duplicates. The developer's patch notes treat level 4 as a distinct state with its own sell value, ability text and bug history, which makes the level worth planning for rather than stumbling into. This page covers the merge route, the event and item shortcuts, and the fixes that changed how level 4 behaves.

How the level up merge produces a level 4

The merge is the backbone of the whole progression system. Two Batomon of the same species and the same level combine into the next level, so a level 4 sits at the end of a chain that starts with a single shop purchase. The developer's patch notes describe the merge reaching level 4 and level 5 in the same sentence when documenting an old bug: a fix notes that buying a same-species monster of the same level through Recruiting Flyer or Magic Lasso would incorrectly trigger a level up merge to level 4 or 5. That wording confirms both that level 4 is produced by merging and that the game checks species and level before it fires.

Route to level 4	What the source says	Practical note
Level up merge	Two same-species, same-level Batomon combine	The default route in every run
Professor event	A Steam review describes an event that levels a monster to a max of 4	Event options are offered, not chosen freely
Ultra Candy	A mythical item named in the same review as the rarer alternative	Availability depends on the run
Magic Mirror and Recruiting Flyer	Patch notes record these producing level 4 copies	Fixed so they no longer force a merge

Other routes to level 4: events, items and copy effects

Merging is not the only way up. A Steam review of the game describes an event where a professor offers to level up a monster to a maximum of 4, and names the mythical Ultra Candy as the harder-to-obtain alternative. The same review calls those encounters events where a choice of options appears, which matters because the level up is a pick from a menu rather than a purchase. Copy effects form the third route: the Magic Mirror item produced level 4 monsters, and a patch note records a fix for a case where a full team and bench still resulted in a level 4 copy. The developer later reworded the item's description to say it gives a plain copy, meaning permanent buffs are not carried over.

What a level 4 actually changes

The store page frames the whole system as open-ended: every Batomon holds infinite potential, and a deep system of unique abilities, trinkets, and items pushes a team beyond its limits. In practice the level changes three measurable things. Sell value is the first, and a patch note states that level 4 now resells at its level 3 price, so the top level is no longer a profit multiplier on its own. Ability text is the second, because some abilities scale per level and some unlock behaviour only at the top: a patch note changed Swim Coach's ability to affect level 4 water monsters as well. The level cap is the third, and it is not universal. A patch note reduced Sukoi's max level from its level up to 3, which means a species can stop short of level 4 entirely.

Level 4 bugs the developer has already fixed

Level 4 has attracted a steady run of fixes, and knowing them saves a run spent on a broken interaction. Shiny Prismagon did not have the correct ability at level 4 until a patch corrected it. Level 4 Tortress shipped with far less shield than intended. Gildshell could reset its sell value when it was merged up. Each of these was fixed in an official announcement, so a level 4 that behaves oddly is worth checking against the current patch rather than against an older guide. The resell change is the one that most often misleads returning players, because older write-ups quote a higher sale price than the current build pays.