This is a remake of Mega Man X, and probably one of the most impressive remakes I’ve seen. They got the designs, and the tone exactly right. So it’s sad that it was only ever released for PSP.
One thing that is “rigth but wrong” with transition to 3D, though, is X turning. With 2D model it was just the flipping of a sprite, the speed they kept with 3D, but now it looks strange.
Interestingly they changed the bosses quite significantly. It’s well known that the fight with Vile can’t be won on SNES. Here, you actually expected to beat him before he grabs you and Zero intervenes.
Another example is Storm Eagle. I mentioned that in the original game it’s quite harmless. Not anymore! Not only it can flow you off the ship easier to instadeath, but it now also throws homing pigeons at you as well rams you horizontally.
The upgrades were changed a bit as well. You don’t get Dash on Chill Penguin stage for free anymore.
After harder Eagle, I didn’t expect Mandril to be so easy. The original Mandril had invincibility after you froze him twice. So you had to dodge his dash attack. Not anymore. You can freeze the poor monkey to death now.