What's your favorite online game?

L.O.B.E.

Improve your brain at L.O.B.E. (the Laboratory Of Brain Enhancement). Inside you'll find 12 mind expanding puzzles, rank-based team bonuses, and a daily prize worth more than 200,000 tokens!

There are twelve different puzzles that can appear in the lobes and each is represented with a unique icon.

Ciphrase
Grid Words
Hit the Dots
Knockout
Mouse Untrap
Logic Line
Pic Search
Happy Trails
E-Quations
Shape Flash
Tanablocks
Tri-Words
Chance (you’ll get a random puzzle)

Instructions are here:

Team Fortress 2
Left4Dead

T
K
O

Build a lot 1, 2 and 3, but I hear the new "Be Rich" game is even better. Waiting for cash to get that one.

Butrflynet, that's a great game - I love these kind of challenges!