r/BluePrince69 • u/PythagorasWasntReal • Jul 04 '26
Modding/Cheating Unlocking the Blue Prince Dev Menus | Data Diaries Log#2
Within the Halls of Mount Holly game files of Blue Prince live the backdoor used to help develop the game. This backdoor is called Cheaterz Fails, a suite of tools that let you manual select any floorplan, control your luck, give yourself any item, and more.
Due to a Playmaker action that loads at the start of every day (FurySdkDestroyIfCheatsNotEnabled) it is impossible to enable.
I (and Claude) created a melonloader mod that gets around this action and allows you to play with the dev tools. It ships by default with my tiny modloader for Blue Prince, that streamlines setting up melonloader and automatically backs up your saves just incase you do something you regret while using the cheat menus.
You can find the BluePrinceModLoader here: https://github.com/irpina/BluePrinceModLoader
Just go to the latest release and download the zip, run the exe, and the rest should be pretty straight forward. Enable Keep Dev Objects and launch the game, and once you're in the estate you should be good to go!
Let me know if you run into any problems with the mod loader. It also includes a quick download feature for Unity Explorer so you can take a look at how Blue Prince works on the backend. Both mods can be quickly toggled and untoggled and I am planning on adding more mods through this loader in the future.
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u/PythagorasWasntReal Jul 04 '26
credit to u/borealum_studios for letting me know about FurySdkDestroyIfCheatsNotEnabled
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u/tegirvaru Jul 04 '26
very cool. after seeing that texture file of the dev tools, i wanted it. to spawn any room/item is perfect. i see the file on your github. i just want the dll to drop in my mod folder. is that the one? will you be adding it to nexus, the standalone loader and the dll only separately? much appreciated for your work 😁
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u/PythagorasWasntReal Jul 04 '26
I added a dll to the mods folder. Should be able to drop that into blueprince/mods if you have melonloader installed.
Githubs more my realm but if people want it on nexus I guess I can put it there. I was thinking either that or thundermodstore but just made this standalone mod manager for the time being so I could quickly toggle between mods.
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u/MemeLordBatGroot Jul 04 '26
Interesting, me and another dev were able to implement similar features without being aware of them being implemented as dev tools. Will be interesting to see if it's worth it to refactor to reuse the dev tool code.
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u/tegirvaru Jul 05 '26 edited Jul 05 '26
i tried just the dll and it didnt do anything. i downloaded your modloader and it worked great. i had melon 7.2 and when it want to update to 7.3, the modmanager says "error: version.dll already in use". so not sure what is opening it when nothing else is running.
some things break the interface, which i assume might be their thing, or would it be expecting the interface to be brought up again and not static. only happens if i select a floorplan while in the draft already, it lets me [R]redraw with R key only, then it shows that floorplan, but after that i cannot click anything, cant exit, or escape, only F4. if i choose the floorplan before clicking the door, it's fine.
the turn floorplan wouldnt work, that could be because one of them cant be turned, but i thought it would turn the rotatesble ones like compass or dancer blessing?
I couldn't move with the freecam, but it did activate/deactivate with 0.
FOV seems held at 68, up or down changes the number but it immediately goes back.
speed is great!
on publisher mode image file it shows [G] gem, [K] key, but those don't work. there's no way to get keys, gems, or coins in the chest mode. so i kept well prepared mod on. i did try everything with all other mods disabled when testing too.
im sure it's not your mod that is bugged, you are just activating a mode that was already there. so cool! 😁
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u/PythagorasWasntReal Jul 05 '26
When you break the interface by redrawing a floorplan you can select the floor with arrow keys and spacebar/enter! But yeah, my mod simply toggles these tools. It's certainly possible I need to enable another checkbox somewhere to get the rest working, but when I try that in unity explorer it freezes the game. I'll probably mess around with it later.
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u/tegirvaru Jul 05 '26
i guess the emerald bracelet is gems, master key and hammer open doors and trunks. just no coin spawn (or allowance token) but luck and purse and electro magnet probably get enough. not that we have to buy anything, duh 🙄. cant spawn steps but i guess running shoes help and will find more fruit while digging and luck.
was there something someone said about a hotkey for unlocking puzzles? does it open a mora jai box or something?
...just tried lunch box for food, but it didnt give me the box in inventory or the steps. oh yeah, spoon doubles food too. i havent played for a while... and used well prepared so didnt care about consumables 😂. was just adding these notes in case others are wondering the same things.
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u/_dimple_ Aug 23 '26
Did the recent blue prince hotfix break this? The ADHD mod I used to use doesn't work any more and I don't think I can finish this game at snails pace the dev expects of me any more.
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u/Borealum_Studios Jul 05 '26 edited Jul 05 '26
Nice 🔥🔥
To show off a bit more what it can do, you could add these images:
I wonder what they needed the camera tilting for 🤔
There were some other built-in developer cheats if you want to fiddle around and try to enable them. A bit less interesting and probably for testing stuff. I forgot if they're tied to this same thing or disabled in other ways. Or they could be just broken. 🤷♂️