Im a huge fan of the Uncharted series and this is merely an average adaptation. Casting is off, cgi looks bad, and the dialogue can be very cringe at times (for example the dialogue during the fight that takes place in the Papa Johns).
Actors and actresses more often play themselves rather than the video game characters.
Also, theres just some odd choices - like when they decided to do the airplane scene from Uncharted 3. It just doesn't fit and feels forced.
There's a ton of plotholes and odd decisions characters make. If you like the movie; great - but this really is average and for Uncharted fans, its not great. They could have casted better and built a better relationship between Nate and Sully.