Well, actually it's an indie PC Smash Bros. designed to look like an original Game Boy title, but close enough. It's a project that's taken years to complete and you can definitely tell in how well polished the game is. However, despite being a technical marvel, the game is kinda shitty. On the bright side you can play as Mega Man. Follow the link to see a few screenshots and a video. Download the game if you're curious.
Super Smash Land
Super Smash Land
