For the purposes of this review all character names will be presented in English because 1. I've been really ill recently and 2. It's late while writing this.

Based on the first three games, Inazuma Eleven is a full on shonen soccer frenzy. Centered around goalkeeper Mark Evans who inspired by his grandfather rebuilds the Raimon Soccer team from nothing into a powerhouse world beating force.
Season 1 is about taking the nationals.
Season 2 is about stopping aliens.
Season 3 is about competing against the world.
Along the way evil forces, corruption and yes I said aliens will never stop Mark from achieving his dreams.
Unconventional is definitely the word I'd use as the lead character is a goalkeeper not a striker, not something you see in any fictional soccer media not even other soccer anime.
That's kinda why I gravitate towards it, it's painfully aware that it's a shonen and really runs with it, when you see how super human these techniques are, it makes Beyblade look tame, but it can also be it's greatest weakness, Mark is the last of a dying breed of what I dub the Ash Ketchum archetype, plucky underdogs who seemingly succeed against all odds, and it runs a regular routine of whenever someone beats one of his saves he goes through the same feelings to learn a new save to win, it's not just him, Axel has a chronic leave and rejoin routine, Willy is literally there to name techniques. Repetition isn't really the shows greatest sin, it's dub casting is, pick which do you find worst
1. A carnival of bad accents.
2. Bad ass characters who sound off all the time
3. It's obvious they didn't even try to hire a proper voice team.
But it does contain some good traits.
1. The changing cast keeps things fresh, especially with how weak the original season 1 team were.
2. It's surprisingly kind to it's female cast.
3. It can be pretty brutal sometimes
So a mixed bag of all sorts of fun.
Final Verdict: It runs a familiar setup story wise and many of it's shortcomings is usually down more to the dub but I find the anime endearing in it's shonen cheesiness.