The IDW Generation 1 storyline in updated chronological order, bringing you the entire span of this masterful reinvention of the classic characters and scenarios. Sentinel Prime is back... from the dead, and in a universe where Starscream rules Cybertron, Optimus Prime has conquered Earth and Megatron is now a Autobot, he concludes it's time to wipe the slate clean and start over. And means awakening the dormant Titans - city-sized Cybertronians of unspeakable might. At Sentinel's command, these revenant Titans will bring devastating chaos, out of which he will restore order. Unless... Optimus Prime can somehow reconnect with these ancient and all-powerful beings. Plus, bonus background features created especially for The Definitive G1 Collection and a new contextual introduction by series editorial consultant Simon Furman. COLLECTING THE TRANSFORMERS: TILL ALL ARE ONE #1-4, TRANSFORMERS: TITANS RETURN (ONE SHOT), TRANSFORMERS #56-57, TRANSFORMERS: MORE THAN MEETS THE EYES #56-57