Okay, I'm going to start with the reasons why you might not like New Star Soccer to get 'em out of the way, so I can then say why this game is, in its own way, exceptionally cool.
1. I'm a Murrican! Fuckin soccer. Do I look gay to you? How bout them Gints?
2. Geez, the graphics look like I'm playing on a NES. If a sports game doesn't look better than the game on TV, is it really a sports game?
Okay. Are we over that? Then onward.
Generally speaking, sports games fall into two categories: there are games where you play a single match, controlling one or more players on the field; and there are sports management games, where you control the franchise, and try to manage the team over the course of a season to reach the World Series/Superbowl/World Cup/What have you. New Star Soccer finds a different way: You're a single player, and you do control your actions in-match (in a sprite-based game that does indeed look like something you'd find on your NES), but it's also something like a life sim. Or, if you prefer, a sports management game in which you don't control a team, but instead shape the career of your individual player.
Or you can think of it as an RPG, with RPG-like stats--only instead of "charisma" and "wisdom," your stats are things like "dribbling" and "passing," and your goal isn't killing orcs, but, um, goals. And of course, landing a tasty, high-paying contract with a Premier League team.
In other words, what you think about when playing is very different from other sports games: the concern isn't "how do I win this game" or "how do I maximize my franchise's revenue," but instead "how do I make the most of my career?"
There are a number of nice little touches, too--like the fact that you can choose to play as a member of virtually any nationality, playing in leagues in virtually any nation, and the names of those leagues (and the names of the teams within them) are real-world.
So... if you've got no interest in what the rest of the world calls "football," well, move along, then. But if you're interested in seeing how the individual vision of a lone wolf developer can drastically reshape what is in other hands the single least creative and innovative sector in gaming--the sports game--then, well... you know: Play this thing.