|Yes, the PS2 comes by default with only 2 controller ports. This means that, as a default system, only 2 people at a time can play on a given PS2. The multitap increases that number to 4 per port!|
The unit isn't that expensive, less than most games. And the reward you get when you have friends over is amazing. My personal favorite, and the reason we bought ours, is Gauntlet: Dark Legends. I am a HUGE fan of the Gauntlet series and this one was quite fun with 4 players. There are many other games that are fun with 4 players - Unreal Tournament, Quake 3, etc.
Yes, you can complain that the PS2 should have had 4 ports to begin with. But it doesn't. So grab yourself a multitap and get some friends over to join in the fun!
Buy PS2 Multitap from Amazon.com
Gauntlet Dark Legends Review