What is 'that' book?

Rime

<Donor>
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I cannot be the only one who remembers reading a book years ago and is unable to remember the title of it, so I figured I would start a thread with my missing title in the hopes that someone could figure it out and a place for other people with the same issue to broach the topic.

Alright.

The book in question involved people from another dimension, I think they were humans, who developed the ability to go to alternate dimension. They did this for a while, conquering world after world, until they came to ours, where it ended up that we were 'giants' compared to them. So we killed them and took their technology and set about colonizing the multi-verse.
 

Caliane

Avatar of War Slayer
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Visual reference if those didn't help.

Obviously the novelization by Orsen Scott Card.
rrr_img_61000.jpg



Alternatively, Sliders, or that twilight zone episode in book form.
 

Grimmlokk

Ahn'Qiraj Raider
12,190
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Google didn't give me an answer. Also this thread title is dumb. Should be something like "Help identifying books thread"