how come i dont see anyone playing and its so confusing...i want to play the versus mode where we each kill each other...and when i logged in, theres so less people

You made it! Great job! Most people just come crying to me and ask me to make them one, before they even try...   I'm glad you got it working! Ok, after you login you see 4 columns.
The first one is survival (kill each-other),
the second one is panel attack, where you try to blow up as many tiles as you can to make them your color,
the third one is hyper bomb where you have to collect three "atoms" and make it to the center,
and the fourth is boss battle.

Each rectangle in the columns are the servers. Not many people play during the day because it is nighttime in Korea, but for the most players, just select the first rectangle in the first column.