Game length? Replayability?

[Pareod]

How much content is there?

[MoD]

Let's just say the asking price is about right in terms of content. In terms of gameplay, it's got a couple of neat mechanics(esp. grenade jumps), you can tinker with your loadout, and you'll pull your hair out getting the S ranks - but the setting is perfect, I actually found it quite immersive to be honest.
The game will take about 3-4 hours to complete on your first playthrough. So that's about £2.50 an hour, which I find quite reasonable. It's the replayability and sweet gameplay that keeps pulling me back in, also I found for the first time in a long time I've gone achievement chasing. So to date, I've got about 12 hours logged. My brother has about 24. And that's nothing compared to some of the guys and gals around here who love the game.

TL:DR short but very sweet, comes highly recommended.

[A Trap]

It's got Sanic in here and you can play as Eggman, what else you need too know?