A time machine with unlimited uses and unlimited power, just like in EVolution...
The first thing I would do is go back in time 10 years and submit all the flashes on Newgrounds that I have out right now.
Flashes from 2002 were of significantly lower quality than they are today. If something very popular from 2002 were submitted into the portal today, it would be doomed to obscurity. They were mostly vector-based and animated using a later edition of Macromedia Flash.
For example, Marshmellow Madness (2002) might have gotten into the Portal History back in the day, but it would probably get something like daily 3rd or below if it were submitted in 2012. Metal Slug Stick (2002) would have been blammed if it were submitted today, no question.
If I submitted the flashes I have right now 10 years ago, I WOULD BE UNSTOPPABLE. WITH MY SUPERIOR TECHNOLOGY AND TECHNIQUE, I WOULD BECOME A LEGEND, NAY, A GOD!!!!!
And hell, I guess if I were REALLY evil, I could beat some of the more popular flash artists to the punch.
Excuse me while I make my finishing touches to the device.
Anyway, while I do that, I guess occupy yourselves with telling me what you all would do first thing if you had a time machine. We're going on the Multiverse theory... changes you make in the past will not affect our current universe, but will instead branch off into an alternate universe. The act of traveling into the future will create an alternate universe in which you were absent until the point you traveled to.
Also, this is my photo manipulation class project.
Gianni
Hah, the ability to have advanced technology and your only desire is to use it to conquer the flash portal. THAT'S dedication.
vezanmatics
It's not my ONLY desire, it's just the first thing I would do. Start off small. Today, the Flash Portal... tomorrow, THE WORLD!!! ...And, I guess, the universe, after that.