OlliOlli is a 2D Arcade Skategame and also it is a hell lot of fun!
There are 5 different areas, all with different kinds of spots and difficulties. Also, OlliOlli is a quite diffcult game, especially if you want to break some highscores. Everything is happening quite fast and if you're bailing you'll have to start again.
Also, you'll have to learn how the tricks are executed, because some challenges require certain tricks. OlliOlli will challenge your reactions and your hand-eye coordination!
What I like about it is, that there are lots of different flip and grind tricks, but in my opinion they should have included grabs, lateflips, more grinds/slides and more fliptricks, because it still has space for more tricks and there are some buttons with no function (for example on the xbox 360 controller.) A gamepad is recommended! The leaderboard function and the daily grind feature makes this game highly replayable, although there aren't that much levels. But still, it will take some time if you want to beat all levels with 5 stars plus the pro levels.
I think it would have been awesome to be able to costumize your skater and skateboard, sadly this isn't possible.
Graphics are typical arcade 2d style, but it still looks nice and stylish.
Although it does lack a little bit of content in my opinion (ok, it costs only 11 €), it is an absolute fun game to play.
If you're into arcade/Indie and skate games, you definitely should check this one out!