In this talk, I will present work in progress on even periodization. This is an operation on spectral stacks, which roughly approximates them as closely as possible with affines corresponding to even periodic ring spectra. This turns out to have close connections to the even filtration of Hahn-Raksit-Wilson, the prismatization stacks of Bhatt-Lurie, as well as the chromatic affineness results for topological modular forms of Mathew-Meier.