Both Pacific Rim games are terrible, by all accounts, which is totally unsurprising yet disappointing nonetheless. You'd think someone would be able to make a decent video game out of giant robots fighting aliens.
Don't worry, though—if you're into Jaegers and mech and all that jazz, there's a video game that's well worth your time: Xenogears, a role-playing game originally developed for the PlayStation 1 (and downloadable on the PlayStation Network to play on PS3 or Vita).
Xenogears is great not just because of its wonderful music, or stirring story, or sprawling world—it is great because it lets you pilot giant robots, and use them to beat up A) giant monsters; B) other giant robots; and C) god.
1) The text speed is very, very slow, which is kind of unbearable when combined with the fact that...
2) This is a very long game. It takes something like 60 hours to finish.
BUT. If you've got some patience, and some fortitude, this is the giant robot game you've always wanted. When I saw Pacific Rim this past weekend, all I could think were things like, "I wish this movie was about Xenogears" and "Now I want to replay Xenogears." So check it out.