Portal: Unity is a mod for the Valve game "portal" with almost everything revamped. New story levels, New textures, redesigned portals, new protagonist, new antagonist and much more. !!PLEASE NOTE!!: You need to download the steampipe patch for it to work with the new SteamPipe system steam uses. To download this just go to the 'Downloads' section on the moddb page. (It's also recommended that you download the lazer fix patch as that fixes a critical end game bug) Instructions on how to install the patches are included with the corresponding patch.
This is one of the best mods I've played in a while. However, there are a number of issues that prevent it from being a truly solid game.
a) In the lobby (escape03), there's a metal detector that activates a red field guarding one of the hallways. If the detector is triggered before the boss battle, on the way out the player is trapped on the other side of the field. Portals cannot be used, as all the nearby walls and floors cannot be portaled. This makes it impossible to complete the game normally, even using noclip.
b) The launch video is encoded with the Xvid codec, which isn't installed by default. This results in an ugly error message while the video is supposed to play. While I probably should install a codec pack, it would be a good idea to use a codec that ships with Windows.
c) As another reviewer pointed out, magic illumination breaks immersion. It would be a good idea to add some fluorescent lights to the hallways and chambers à la Portal.
d) The voice acting is much better than a number of other mods, but it ends up being almost completely unintelligible. Adding subtitles is an absolute must - otherwise it's very difficult to tell what's going on.
e) The final boss battle was neat but it was quite counterintuitive - I initially missed the yellow lever by the elevator and assumed that the goal was to redirect the rockets, as in the Portal boss battle. It wasn't very hard to figure out after that was sorted out but it might be a good idea to e.g. make the lever more obvious.
f) While the map design is quite good for most of the game, it seems to suffer from a lack of refinement toward the end, especially after the boss battle. The hallways are too geometric and undetailed, and the elevators are like the ones from Half-Life 1.
g) Finally, it might be nice to dress up the menu screen a bit more, such as by adding a graphical logo.
I'm only nitpicking this so much because it's such a promising mod - unfortunately, a 1.5 update is sorely needed.
Portal unity starts of quite interesting and introducest many new puzzle elements. The maps are challenging, while mostly remaining fair. However, after a good start the mod steadily becomes increasingly dull. The mod concludes with a very boring bossfight and a totally unrewarding end.
This is a really cool mod, but for me (and by 'me' I mean no one else has this issue) the portals are kind of glitchy, i.e. they are just clear rectangles with a large orange/blue colored oval on the inside of it. Not only that, the boss fight (I have no idea what 'boss' I was actually fighting, so I don't know if I should even call it a 'boss') was very confusing; I didn't have a clue what I was supposed to do. Other than all of that bull-crap, this is an epic mod! 9/10
While voice acting is decent and textures are quite good, the actual puzzles seem uninspired. The new mechanics that are introduced are not very well used, and the later levels aren't as difficult as they should be. A good attempt, but I think this mod could really be improved.