The basic idea in the actual game is that you pick one from four vaguely different trucks and then one from five vaguely different levels. You then compete against another truck in a simple checkpoint race. That's it. However, Big Rigs can't even get this basic concept right. The supposedly computer-controlled truck you're supposed to be racing against in the game never actually moves. It's right there next to you at the beginning of a race, but it has no purpose in the game. This is to say, actually, that none of the game's races have a purpose because there's no competition and no time limit. You win every single time. So unless you especially like seeing a winning-screen over and over again that reads "You're Winner!", there is absolutely no point in playing Big Rigs.
 
But let's assume for a moment that the AI trucks actually worked, and you could get a race going. Even if this were the case, the game still wouldn't be worth playing in the slightest. Big Rigs' controls essentially involve hitting the arrow keys of the keyboard in the desired direction and nothing more. The game provides no support for peripheral controllers of any kind, and there isn't even an option to edit the default keyboard controls in any manner. Your truck also handles pretty horribly. There are no physics here. You accelerate much too quickly to even be minutely realistic (especially when going in reverse, which lets you go from around 0 to 60mph in about five seconds, continue accelerating infinitely faster, and stop on a dime the second you let up on the keyboard), you can travel over the most rugged of terrain without any problems (including nearly vertical mountains), and you can turn in ways that cause you to jerk around in some pretty ridiculous manners.