Spaceception

The Voyage Through Time has been (IDK, temporarily) renamed The Time Sleeper:

In the year 2051, a brilliant physicist and engineer builds a Cyropod that allows him to stay in stasis for a hundred years without aging. After boosting into orbit, he steps inside, and locks himself away for a century, where he wakes up in 2152.
Expecting fame and glory when he wakes, he is shocked to find out humanity has nearly wiped itself out. Desperate for supplies, he lands on the surface, and finds himself a prized slave to ruthless dictators who are willing to kill anyone without remorse.
With no way of traveling in the past, and the remnants of humanity on the edge of another war, which could wipe them out for good, he must rise a rebellion against them.
Or risk nuclear annihilation.