This past week or so, from here on GOG:
The Catacomb: It's alright for what it is. I liked the game's sense of humor, but nothing too special. Also I'm almost certain it lied with a hint to a secret door, but it was late at the time, so possible I read the number it gave me wrong...
Catacomb 3D: The Descent: Not a whole lot to say on this one beyond how amazed I am I didn't break my Ctrl key firing rapidly enough to keep those demons in the last two levels on hit stun. Also, miserable ending-I'm assuming there's a manual or leaflet somewhere that explained who that little guy you rescued was. Still, it's a fun enough diversion for what it is.
Dangerous Dave in the Haunted Mansion: This one I liked quite a bit. It's barebones, but solid level design and decently challenging.
Dave Goes Nutz!: This one wasn't nearly as good. (It also stole the difficulty selection screen from the last three Catacombs games, which also aren't particularly great.) Hit detection and level design aren't anywhere near as good, the multiple-rooms thing resulted in enemies following me around on a platform where I couldn't shoot them and then swarming me when I reentered the room through the next door, unable to get off the number of shots needed to save myself. There is an awful "secret" door too, and firing up and down through platforms is basically a guessing game with regards to where you actually can do so.
From elsewhere on the PC:
Eversion: Well, again. I ran through the HD version of it on Steam real quick. I still love it, brief though it might be.
Darksiders: Ugh, it's awesome. Its ending is awesome. And they'll never follow up on it. That actually stung quite a bit, watching that and knowing I'll not get to see the end of the story. Ah well. Still a fun adventure with some brilliant designs. The collectible armor and a full collection of life upgrades made the endgame a joke challenge-wise, though.
On the console boxes:
Garfield: Caught in the Act: This is a Genesis game I got for Christmas when I was a kid. It wasn't particularly great-not terrible, but the level design's pretty bad and all the challenge comes from the wrong places (enemies approaching from unattackable angles, a blind jump or two, etc.). Still, I'm trying to lay waste to the entire backlog, so it had to be taken down eventually.
Full list: http://www.gog.com/forum/general/games_finished_in_2013/post242