Tips for "Tower of Goo" level in "World of Goo"

This isn't a level you should be looking to score a lot of extra goo balls on. Build out your base to 5 or 6 goo balls across. Go up a few levels, and then bring it in by one goo ball. Continue this process, while maintaining strength by adding goo balls to whichever side your tower is leaning to in a truss structure. Once you're within about 3-5 meters, build up as fast as you can. The suction from the pipe will help to keep your tower stable, and you should be able to stop building. With any luck, you'll still have more than 25 goo balls left to complete the level.