Is there a way to speed up games with an accelerator? Title + what i'm looking for is like the cheat engine "speed hack" equivalent, or for another example, on the iOS jailbroken app, xmodgames there is an accelerator feature. Is there something like this for android?

Note: I am not looking for something to speed up my phone, I just want the game to be sped up so things move faster in-game.
Try use GameGuardian. It perfect works on all Android versions include Lollipop and Marshmallow.

It have speedhack worked on arm and x86 devices, include x86 emulators like Bluestacks, Droid4X, Andy and others.