Recently, I've returned to play Cell to Singularity. Upon unlocking Dawn of Civilisation - Stone age I noticed very strange number. (huge number close to 2^31)
My idea counter is not visible. I can click on Stone age and the number will DECREASE by 1. This leads me to suspicion of integer overflow.
Valley, Universe and Events are working as expected.
Tech info: PC/NTB, Windows 11, Steam save.