Actually, this seems like a really good idea. At the end of the day, Scott Pilgrim has proved that decent video-games can possibly be made from films, because it didn't tie itself down with following the film story. Scott Pilgrim followed the books instead, and yet even then focused on gameplay and made it an homage to the old-school brawlers that the books themselves take inspiration from. SO when the developers open their minds and don't let themselves be shackled by the constraints so many adaptations suffer from, genius has a chance to rear it's head, just like in any other form of media.
Quite frankly, I can already see the amazing possibilities for puzzles, storylines, and simply just trying to give the players a massive mindfuck. If the team do work on this, and actually focus on making something over several years (with a good development team, time, budget, etc.) and treat it as something new, and don't let themselves be drawn into the trap of being tied down by the film (which refused to be tied down itself by traditional cinematographic techniques), then this could be something really unique and awesome. Something I'd possibly consider buying at midnight on release day
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