Glitchy for me. The more I play, the slower it gets until it's unplayable. Refreshing page fixes, but then it keeps slowing down. It's like the flash player is bugged and is holding onto loaded objects long after they are gone.
OH MY GOD THERE IS A SECOND ONE. THE FIRST IS MY ALL TIME FAVORITE FLASH GAME. I CAN'T WAIT TO PLAY THIS. I HATE BEING THAT CAPS LOCK GUY, BUT THIS GAME IS THE SHIZNIT!
Nothing original, but the gameplay is well executed. There were a lot of unnecessary upgrades that I don't think anyone uses, but I guess that's not a major complaint.
It would be a great game if the market wasn't completely luck based. I've played through 5 times now and each time the market has reacted completely differently.