Hey, why not. I'll do these together. I can't think of a particularly good reason to do them separately.
Smuggler's Run (2000)
The first Smuggler's Run was something else, especially when it was released as part of the PS2 launch. I say "was" because, as you can probably surmise, not everything about it has aged well. It doesn't look great, it doesn't always play great, and it doesn't move you with an involving narrative (it doesn't even really have one). You're a smuggler, and you smuggle things, and there's really nothing more to it than that. You have big (for the time) open worlds set on the US/Canada and US/Mexico borders in which to smuggle the goods. Now, there's a bit of plot from the menu that introduces each mission, read by an irritating narrator with an especially juvenile sense of sexuality, but essentially it means the same thing as the plot of the original TimeSplitters (2000), which is to say it means nothing, or just about. Actually, Smuggler's Run and TimeSplitters have more in common than such easy-going narratives: essentially, Smuggler's is nothing more than a series of deathmatches with cars (actually more like BagTag, for all you TS fans out there). You pick up packages and deliver them, or you and a team do the same, or you have an inexplicable checkpoint race with rival gangs. It's more like an arcade game than anything else. You pick up packages by driving over them, and you can steal or transfer them by slamming into other cars. It works quite well as mindless, almost anti-narrative horseplay, but like any arcade game, it can get more than a bit repetitive if you play it for too long. And more often than not, Smuggler's is incredibly frustrating and difficult, especially the latter half of the game (another similarity to TimeSplitters). Despite the difficulty, however, I enjoyed the way in which Smuggler's allows you to create your own route to mission completion. Smuggler's Run is a meat and potatoes kind of game. It does the job without a whole lot of panache.
Smuggler's Run 2: Hostile Territory (2001)
This is more like it. Smuggler's Run 2 is an improvement on the original in every way possible. This one not only has an actual story, but live-action cut-scenes with real actors and everything. They're silly as hell and probably not in a good way, but I appreciate the effort. You play as a guy who works for another guy who works freelance for some bad people with some bad goods to move. This takes you to Russia and then to Vietnam, then back to Russia for Winter Russia. Several things make this game much better than its predecessor: it looks fantastic, the worlds are bigger and the terrain is more varied, and the difficulty has been toned down to what I consider to be a reasonable level. There's still an annoying glitch carried over from Smuggler's 1, in which your pursuers' vehicles seem to be magnetized to your rear bumper. This can be a real drag because they more often than not spin you out of control, which is really frustrating when you're on the clock and racing to the next checkpoint (which is always the case). 2's missions are much better and more varied than the original as well. As before, 2 can get repetitive if you persist in playing it for too long, but for short bursts of fun, it really is one of the best arcade-style racing games on PS2.