I don't remember all of this one either, but now that I'm recording them again, I think I'll be able to remember them better.
Some corporation or something had absorbed a large volume of the Earth's water for some sort of experiment. I and some other guy were in a room that looked like a bedroom, sitting on chairs and looking at some kind of screen that detailed all of this. We saw that one of the lakes around Finland had been completely drained, and I presumed that that was about the extent of the drainage around the world, but then the globe on the screen rotated to show a gigantic land bridge between North America and Europe that was apparently caused by the lowering of worldwide sea level.
This part of the dream may or may not be related to the one above. I'm not sure if that guy was the same guy as here, but in any case, I was with someone else in a wooded area. We were supposed to be in a cabin of some sort, spying on some "enemies", who may or may not have been that corporation responsible for the water crisis. My field of vision was sort of like one of those online village games (I don't actually play any, mind you) - it shifted to reveal the enemy's base, where I saw houses with purply-blue roofs.
Then the dream abruptly shifted focus (as seems to be a common theme with mine), and I was playing a video game. I think it was supposed to be Sonic 2006, and I was playing as Silver in a level that looked kind of like Super Mario Galaxy's Melty Molten Galaxy. There was some kind of display on the left side of the screen that had the time I needed to complete it in to get an "S" rank for the level. I stared at it for a second, looked at my time and realized there were about 2 seconds left before that time was up, and then stared at the fiery rock in front of me that was apparently the end of the level. I hovered toward it, but time ran out, so I reappeared back at my original location (apparently I could "rewind") and did it faster this time, getting to the end just in time for the S rank.
For those of you who read the ones I posted after last Christmas, I'm currently in the process of 100%-ing Sonic 2006, so I guess it would make sense it's showing up in my dreams again. :P