The only action that the player can perform autonomously in Promise Mascot Agency, other than going through different menus and talking to NPCs, is to drive their truckaround. This truck stays with you throughout your playthrough, so it’s a very important part of the gameplay.
Visually, it’s a simple white pick-up truck, but it has a lot of personality to it. The main character loves this truck dearly and doesn’t want to part ways with it, even taking it with him to his metaphorical grave into the cursed town. Even though you can’t replace the truck, there is a way to upgrade it.
30 Best Games Set in Japan, Ranked (2025 Update)
Apart from offering fascinating gameplay, these exciting video games allow players to experience the Japanese culture and way of life.
How To Upgrade Your Truck in Promise Mascot Agency
To upgrade the truck, the player needs to talk to the mechanic in the town, Jose. He will give you a quest to catch white fox spirits that run around the map in designated locations. Once players catch these roaming spirits, they’ll upgrade the truck in different ways, unlocking new functionalities and making the truck more efficient.
This makes the gameplay feel better in the long run and gives the player a natural sense of progression as they explore more of the map. In total, there are six truck upgrades that players need to find from six locations in Kaso-Machi. After you have all the upgrades, you will unlock an achievement, The Sound Of Eurobeat.
6 Cozy Games About The Environment
These charming cozy games do an excellent job exploring the environment and ways to appreciate its beauty and worth.
Where to Find All Truck Upgrades in Promise Mascot Agency
In total, there are six truck upgrades that players can find in the town. These upgrades are as follows:
- Truck Boost Upgrade: It increases the boost available to the player. Found on one of the roads leading to the mines.
- Truck Speakers: These give a 2.5% buff to your Mascots’ popularity. Found near the intersection south of the Kaso Shrine
- Truck Trash Collection: Lets you drive over trash to clean it up for small rewards. Found on the road going north-west from Captain Sign.
- Pinky Launcher: It lets you launch Pinky into objects, letting you destroy obstacles and barriers to access before unreachable places. Can be found near the Recycle Store intersection.
- Truck Glider Upgrade: It gives the truck glider wings that let you soar over the town. Can be found at the southern tip of the town, at the Mountain Summit.
- Truck Bouyancy: Allows the truck to drive on water, becoming a boat in functionality. This upgrade lets you visit islands off the coast of the town. Can be found east of the fruit farm, next to the coast.
- Released
- April 10, 2025
- Developer(s)
- Kaizen Game Works
- Publisher(s)
- Kaizen Game Works





- Genre(s)
- RPG, Simulation, Management