Their problem is a typical build-or-buy. There's likely a price at which it just makes sense to buy you instead of building it out. Do they have any competitor

Their problem is a typical build-or-buy. There's likely a price at which it just makes sense to buy you instead of building it out. Do they have any competitors who might be interested in you? Maybe a smaller game publisher? Can you leverage your head start in any way? Can you make your service more 'sticky'? If people have committed lots of time to building up a profile on your site then they'd be less inclined to switch. People still use Yahoo after a decade of Google being around. One idea could be adding a Facebook app or link up with FB Connect - link deeper into the users life, announce targets, scores, etc.