
Greetings to all of our Master of Piece fans!
In our previous dev diary, we introduced the
Mercenary Movement and
Action Points systems.
Today, we’re excited to share details about the newly improved
Boss Battle system.
[h2]Same Victory Conditions across All Battles[/h2]
In the new Boss Battle, the Boss replaces the fortress position. Just like regular battles, victory is achieved by destroying the enemy’s base.

Previously, the Boss moved left and right to attack the player (like one of the mercenaries). The victory condition was defeating the Boss, not destroying the Flag or Fortress.
However, this created problems as the Victory Condition was different from other battles. The Boss also moved around in the battlefield, which made it difficult for players to utilize the mercenaries at the right places and timings. We assessed that this was far from Master of Piece’s design philosophy of simple rules and synergistic gameplay.
Thus, to provide players with a consistent learning experience across all battles while preserving the unique fun of Boss Battles, we merged the Boss and the fortress into one.
Now that the Boss can be attacked from all tiles, players can fully execute the builds and strategies that they have devised in regular battles.
At the same time, we also worked to make Boss patterns more distinct and diverse.
Next, we’d like to introduce the newly enhanced
“Boss Attack Pattern Diversification”.
[h2]Boss Attack Pattern Diversification[/h2]
The Boss now features more threatening and unique traits, utilizing a variety of combat patterns to pressure players.

Previously, the Boss had a simple pattern—moving left and right and attacking only under specific conditions.
With this update, the Boss has become a more dynamic and formidable foe.
Players will need to identify the Boss’s patterns and devise their own strategies to overcome the battle.
Flexible decision making would be necessary, based on your Mercenary and trait combinations and the current battle situation.
We’ve also made changes to the enemy Mercenaries that appear in the battles.
[h2]Unique Traits for Enemy Mercenaries[/h2]
Enemy Mercenaries deployed in Elite and Boss Battles now come with their own unique traits.

These Mercenaries can create synergy by protecting or empowering one another, becoming powerful reinforcements for the Boss. Players cannot obtain these unique traits from the players' side.
Below are some examples of how the new Boss Battle and Mercenary Movement systems actually work:

The Boss does not move but attacks and activates its traits from a fixed position.

Before the attack, you can check the tiles targeted by the Boss’s special attack, then spend enough Action Points to move your Mercenary and dodge the attack.
[h2]What’s Next[/h2]
The improved Boss Battle system lets players execute their strategies more effectively, while reinforcing the Boss to make it even more formidable.
Additionally, a variety of randomly selected Elite and Boss Battles will be added to each journey through future updates.
We hope this will stimulate players’ desire to take on new challenges and offer a tense and rewarding experience in every battle.
We will continue to refine the system so that more players can enjoy it, all while preserving the unique charm of Master of Piece.
Stay tuned for more updates, and connect with us in our Discord and social media below!