If you have not tired super meat boy. You can buy it for $3.75 on steam till the deal runs out. And Super Meat Boy is a awesome platformer. Youtube it or some thing.
That's a warp zone in the style of IWBTG, you play as The Kid for the 3 levels of that warp zone and you unlock The Kid as a playable character if you beat them (which I managed to )
Of course, the only thing about it that can really relate to IWBTG is the difficulty, but even then this game is based on difficulty that can be overcome with practice of the controls whereas IWBTG is outright unfair.
Having said this, if you've played the flash game it's very easy to see where the rip-off notion comes from. But everything about the flash version and more has been vastly improved on in this game.
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory
I will be AFK for a couple of days you guys hold down the fort while I am gone. I will be checking in on my phone but that will severly limit me. Be back saturday!