But it wont stop me from giving 5 stars dario859034275. Really cool game but its so laggy like about 2 fps or something small. Still a bunch of work to do on that front though. Support Newgrounds and get tons of perks for just 2.99. I've already made a pass through the game evening out the difficulty curve, and fixing some of the unfair artificial difficulty bits. Almost all the tilesets and backgrounds will be updated. I'm also in the midst of updating the rest of the game.
The Boss Rush can be found in the crashed airship level, and you'll need a save game that has beaten the secret final boss to access it. It's still is an incomplete state, but it's playable, and shouldn't have any major glitches (the Boss Rush that is, the rest of the update is only halfish done). It's been a long time coming, but I finally have the Boss Rush beta for A Koopa's Revenge 2 up and running:
