Dissolution is a science fiction, single-player mod for Half-Life 2 that mixes adventure and action game-play. Set in the year 2089, in a universe dominated by a mega corporate entity, Xterrier, the player awakes in a hidden lab to the voice of the mysterious Wilson. Guided by Wilson, the player must make their way through the ravaged Xterrier 581c colony, making use of any and all resources they can get their hands on in order to survive, all the while attempting to piece together the events leading to the colony's collapse and their own identity.
If there is one place this mod shines, it is in creating suspense. The sterile atmosphere and empty corridors are brilliant at freaking you out, and some of the more fantastic elements (such as the crows) can make this mod very creepy at times.
Unfortunately, Dissolution has one major problem: It's not actually that fun to play. Combat is ridiculously difficult to begin with, due to Zerg rushes from enemies and a useless pistol, before becoming comically easy once you get your hands on the shotgun. Enemy variety is nonexistent, and the only enemies you see swarm you in packs at scripted moments. The fact that the entire game was just a series of fetch quests featuring a climax ripped straight from Bioshock didn't help one bit.
That said, Dissolution is still a recommended download, if only to bear witness to the bleak level design and surprisingly good voice acting. Still, it could have been so much better.