Based on the early reviews and comments not only were gamers unhappy that the free game was a demo and not the full game, but there were several performance issues with the game.
The platform styled Windows Phone game had you playing the role of the friendly neighborhood Spider-man as he battled the likes of the Green Goblin, Sandman and Venom. There were several renditions of the lead character available through the gaming store that could be unlocked with the coins you earned during game play.
Again, the "free version" of the game was simply a demo that allowed you to play the first one and a half levels of the game. After which, if you wanted to continue playing it would cost you a $4.99 in-app purchase.
After playing the game in preparation for a review, Spider-man: Ultimate Power came across as having potential. I just don't think it had $5 worth of potential.
We've reached out to Gameloft to see why the game was pulled and if they plan on re-releasing it. It may be the case the release should have been a free, ad-supported version of the full game and someone goofed by releasing it as a demo. If we hear anything definitive, we will pass it on.