Alright
Compared to Super Smash Bros. Melee, this game is missing quite a few things. The first thing you may notice is the game play. It's usually just you attacking and then your enemy attacks while you hope not to die. Other times you can just keep pressing the same button over and over and your enemy will die. This gets old rather quick, and there's also not many moves compared to Melee.
Also, the characters and stages were a surprise to me. You did a good job putting nearly 30 characters in the game like Melee, but instead of fan favorites like Ness and Doctor Mario, we get characters like Blade and Mr. Incredible. There were only 8 or 9 stages however, compared to Melee having around 26 stages.
The adventure and classic modes were easy, especially since you can skip them with a little clicking.
The other modes were easy as well.
I hope your next game, Super Smash Flash 2, is better. It already looks like a Super Smash Bros. game so far.