Dislikes: the "Learning to Fly" mission. This held me up for like a month before I finally beat it.
Half-Life 2: Episode One, Half-Life 2: Episode Two: The story continues. I found these slightly less edgy and intense than Half-Life 2, but well worth playing.
Half-Life 2: Lost Coast: Very short, more of a demo than a real game.
Likes: the magic and the fighting systems worked together pretty well. Grand Theft Auto style game where (after the early training levels) you can roam the world freely, taking missions when you want.
Dislikes: the game tells you that your choices for good and evil will have important consequences, but the consequences are only cosmetic. The big important missions, without completing which the game does not move forward, all count as good deeds making it impossible to maintain a purely evil character.
Dislikes: Screen occasionally locks up. Usually the game recovers but a few times I had to cycle power to get going again. This generally stressed my hardware more than any game. I invested in a more powerful CPU fan to keep it from crashing due to overheating.
Technically it is possible to play this game with mouse and keyboard, but it's frustrating. If you're playing on Windows and don't already have an XBox controller, plan on spending a little extra money for this accessory.
The whole 'activites with friends' part of the game was stupid. I was going for 'Endangered Species' but came up short with 199 flying rats.
In general there was a feeling they were going for quantity rather than quality. The game throws a lot of time-consuming activities at you, but a lot of it wasn't as fun as it could have been.
Then there's the elevator bug. You're riding an elevator and when you reach your destination, your feet get welded to the floor. You can't move, then you start losing HP until you die. You can work around this by jumping just before reaching the top or bottom. Even so, towards the end of Half-life there are some puzzles that involve jumping from elevator to elevator where this seriously gets in the way. I understand this bug is not in all versions, so your mileage may vary. The elevator bug seems at least partially fixed in Blue Shift. I have gotten stuck on the elevators but without the HP loss and was able to free myself.
Opposing Force, Blue Shift: these Half-Life extensions are basically more of the same. There are some cool new weapons in Opposing Force. I really liked the barnacle grappling hook. Occasionally you will see some familiar scenery but mostly it's new. I think they improved the barnacle-spilling-its-guts animation. Totally worth playing. The ending of Blue Shift seemed a little abrupt. Blue Shift annoyingly requires you to have the CD in the drive to play.
Dislikes: When you finish the game and go into 'Playground of Destruction' mode, you lose the hard-earned $100,000,000.
Likes: Mayhem, dark humor, Stroggification, vehicles, boss monsters. Id software rules for making this available for Linux as well as for Windows.
Dislikes: I thought the second to last big battle was too hard. I was totally discouraged by this for a long time but finally came back and beat it. Similar experience to "Learning to Fly" in GTA: San Andreas.
Likes: the unique style points scoring system. Earn power-ups based on the cool manner in which you kill your enemies. E.g. shooting while sliding down a banister or swinging from a chandelier. Good implementation of 'bullet time', better than Max Payne.
Dislikes: repetitive game play. There's one brief mission where you're door gunner in a chopper, otherwise you're basically walking from room to room shooting people the whole time.
Likes: Lots of mindless killing.
Dislikes: Number 1 dislike is the checkpoint/mission system. There are 8 missions and the only opportunity to save your game is after completing a mission. The final mission took me about 5 hours. I really would have liked to save off and do some other things, but I couldn't without losing all the progress I had made that day. When you hit a checkpoint, then get killed, you can restart at the checkpoint instead of restarting the whole mission, but it doesn't save anything to disk. Repetitive game play. The only thing setting this apart from, say, DOOM or Duke3D is some breakable walls and stuff. No vehicles, no boss monsters. The final few missions build up towards the ultimate goal of killing this rogue CIA guy. I was chucking around a lot of grenades and there were a bunch of explosions at the end, but I never saw this guy face to face which was rather unsatisfying.
Likes: Gritty film noir atmosphere, homages to John Woo and Chow Yun Fat, the comic book panels.
Dislikes: Repetitive game play. Walk from room to room killing bad guys with a few puzzles thrown in. The amount of masturbation going on in the early part of this game seemed a bit excessive and wasn't that funny after the first couple of times.
Likes: GTA style game, roam the map at will performing missions when you like. Funny. Nice long game, it probably took me 60-80 hours. The grappling hook was cool (you can jack a chopper in flight).
Dislikes: I found the whole fuel thing a bit annoying. The final mission is a total dud. This game has actual bugs. Hall of mirrors effect in crowded areas. Sometimes paid-for supplies, vehicles and air strikes aren't delivered. I was not able to do a save game after completing the final mission.
Again, my hat's off to Id for releasing Linux versions. I started this in 2007. I'll probably eventually finish it.