Better than the last one, but it lacks some of the edge of the first 3 and has a couple of things that aren't sufficiently explained at all "because plot". The plotline itself is predictable Indiana Jones. Harrison Ford's age was an obvious limiting factor to some of what they could do, though. For the most part, you only get glimpses of the "action" you'd expect from an Indy movie after the first 20 minutes or so.
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So a planet's somewhere out there, their history the same as ours is written. The only difference is that... Everyone's a kitten!