Chrononauts

In Chrononauts you play as a time traveller from an alternate reality. You are on a mission to “rescue” three specific objects from time but in the process you have become lost in an alternate timeline. To win you must either complete your original mission, alter the timeline sufficiently to allow you to return home or gather enough power and influence over the time space continuum that you become the ultimate timelord, able to bend time to suit your every whim.