They're not meh... Beneath a Steel Sky is one of the best adventure games ever made, and Tyrian and Stargunner are great SHMUPS .

Make sure to give Treasure Adventure Game a try. At first glance it might l not look like something special, but it's one of the best games I've played in years.

Treasure Adventure Game is quite good, though it was essentially abandoned by the dev after v.1.0 when he began work on its expanded commercial remake, Treasure Adventure World, so it is a little buggy in places. But you can't beat the price!

Seconded. Cheesy humor and a zany B-movie plot, yet it still manages to somehow be charming rather than grating.

Warsow also seems like it would be pretty cool for those into Quake III-style multiplayer "twitch" shooters...assuming you can find anyone to play with. (I've not played it, so I can't really opine too much.) One issue, though, is that the version on GOG is apparently kind of old now, so the best place to get this game would probably be from the developers' site (it's an open-source game, I believe, so it's free there, and probably anywhere else it's hosted, as well).

As to the rest of the permanent freebies here, one's enjoyment would probably depend on whether or not one has previously played any of them, what game genre(s) one is most interested in, and how well one can stand the older graphics, interfaces, etc.

It's also free on Desura, together with Beneath a Steel Sky, Flight of the Amazon Queen, Tyrian2000 and TeenAgent (and 450+ more, but who's counting? ;)).

new huh? i would recommend ... run. run fast before you end up with over 150 awesome games and an itchy sales promo finger waiting for the next 80%off blitz.