'007 Legends' among titles absent from Steam and from Activision's own store.
'007 Legends' was infamously panned by critics (and consumers) before its developer, Eurocom, shut down. According to Eurogamer, Activision's licensing deal was set to last from 2006 until 2014, suggesting that the digital titles may soon reappear.
In addition to '007 Legends,' with its 'Skyfall' tie-in, prior titles 'James Bond: Blood Stone' and 'Quantum of Solace' are currently unavailable for digital purchase. In a seemingly related development, 'GoldenEye Reloaded' is not currently available for purchase on Xbox Live.