I know cracktros are a dead art, but I am genuinely interested in the general process to programming a cracktro. The pixel manipulation seems to still be in use in [some] modern 'keygen' and patch programs. Stuff like this: I can't seem to find any of the really cool stuff for some reason- where there are ripples and stuff. Think of say, how Ubi pulled the effects in the AC series or WatchDogs- except real-time manipulation of pixels instead of just using overlays. How do you reference pixels, (or rather, is that even the efficient way to do it?) and can this only be done in certain languages? Notice the linked video how it colors in the pixels making it look like it "takes over" the screen. Stuff like that is what I am interested in.