The best flash game I ever played growing up

I somehow came across this game while looking in the Chekpoint database - it came up as a recommended game to another Flash game, Super Mario Sunshine 64 - and I'm so glad it did because holy shit I completely forgot how amazing this game was. I definitely played over 1000 hours when i was around 8. So you're basically this koopa that is attempting to get revenge on the mushroom kingdom and Mario, and so instead of a killing a goomba as the enemy, you're killing a toad. And then, you actually have to defeat baby mario, luigi, wario and walugi until the final boss of mario and luigi. What made this game so fucking addicting was the movement and how the koopa moved. Yes, you are only hitting left or right and space to jump while holding down control to do a run jump, but it was the simplicity of this mixed with the comical nature of trying to kill mario that made you want to keep playing. There is also a point where the koopa can eat a fire flower and breathe fire, along with a section where they can fly I believe. Man, the fact that this was a fan made game and it could bring so much joy is really something special. I wish I could express just how many fucking times I'd replay this over and over. I'm pretty sure I couldn't get past like the 4th or 5th level. It was sort of difficult to control at times, like you could easily overshoot jumping on an enemies head and falling on lava. But you just kept on wanting to play for whatever reason. Here is a link to the flash game today if anyone wants to play: https://www.newgrounds.com/portal/view/292165