The latest film in the "Transformers" franchise - "Transformers One" - is finally in theaters, and this time it's animated. The new film from director Josh Cooley serves as a prequel to the entire universe and chronicles the early days of Optimus and Megatron's friendship.

That figure beats out a slew of family movie previews including that of Paramount’s IF ($1.75M), The Garfield Movie ($2.3M), Trolls Band Together and even the live-action spinoff Transformers movie, Bumblebee which did $2.15M.

While it is enjoying strong critical and audience reception, Paramount/Hasbro Entertainment’s “Transformers One” is off to a somewhat slow start at the box office, grossing just $10 million on opening day — including $3.4 million from previews — as it heads for an opening weekend of $26.3 million.

We rank every "Transformer" movie (including the animated "Transformers One") from worst to best. Which are pretty good and which are garage fires?

Ahead of its release date later this year, Transformers One confirms the return of familiar Autobots and Decepticons from the franchise.

Transformers One features the Elder Primes as key elements of the narrative, tweaking the lore surrounding the earliest heroes of Cybertron.