This Thursday, GameTap will remove 97 games from its gratis lineup, making them available only to Gold subscribers. The current free lineup consists of 145 titles, making this a 67% reduction in games. Of course, quality is more important than quantity in this situation, and there are several noteworthy titles (Tomb Raider: Legend, Deus Ex, Psychonauts) being removed.
Going forward, GameTap will make certain titles available free for one week only, which is something the service has been doing for almost half a year. It's unclear whether the cuts have anything to do with Metaboli taking over the service in the near future.