Idea: take the interface memolane.com (a horizontal timeline) and place games on the timeline as they are added to a site.
For the user, whenever they play a game, the play activity is added to their timeline. The value is that a user will be able to visualize what games they have played or downloaded. Over time additional events could be added (highscores, types of favorites, friends etc.) This solves the player headache of not being able to find games they have played and gives a more pleasing visualization of games played.
To facilitate discovery, timelines could have text based filters. Instead of search results, the game timeline would change to show.results.
Thoughts? Comments? Ideas? Please blow holes through my idea.