Escape Nublar is the main wizard mode, however if you want rather than playing a standard game, you have the ability to simply play the wizard mode as a mini game - this is called the Escape Nublar Challenge
Escape Nublar Challenge
By holding in both flipper buttons, you can choose to play the Escape Nublar Challenge. This is basically a game that consists of only playing Escape Nublar. Because there was no game beforehand, you are spotted 12 rescues and a default path to Visitor Center (the far edge of the map depending on what direction the truck is already facing). Also a very minor difference - you start immediately from a plunge, and thus the right flipper. Additionally, there are separate leaderboards for speed runs and high score runs. Tilting counts as an immediate mode loss, and thus, ends your game - however, your supply of tilt warnings is replenished when you lose a truck.
Replays are disabled during this mode, but you can still match at the end. You can also play this mode with multiple players, however, each player will play their entire Escape Nublar attempt in turn (that is, no switching players between trucks). And no, you cannot unlock When Dinosaurs Ruled the Earth.
Speed run tip: If you’re confident in your shot making, sometimes it’s better to simply avoid hitting the truck at all during the Rescue Phase. If you’re going for a speed run, hitting the truck can cause you to veer off-course from the “easy” path unless you remember to switch the truck back as well. If you veer off the path, you may have to survive not just one, but two “hard” paddocks to get back! Also if you’re making your shots easily, fuel shouldn’t be too much of a concern.
For more info on playing the Escape Nublar mode itself, check out the ruleset link above