Opened chests are saved on the GameInstance using the built in GUID system that gives every chest a unique ID. This way they'll stay open even throughout level transitions and it will also tie into the save system that will be created later.

@CobraCodeDev You're killing it man! I can't wait for this tutorial to be released, this is good stuff!!

“We have tacitly abandoned certain public spaces to the most disordered and depraved among us because enforcing the law feels mean and makes us uncomfortable,” writes @katrosenfield.

@CobraCodeDev Ohhhh so i could make an archivments to Open all the chest! Nothing better as to replay whole Final Fantasy bcs i missed a chest in a one time visit place :3 xD

@CobraCodeDev That is good! Save systems are a pain though

@CobraCodeDev Man i look the Billboard/3D game