This is a pretty impressive demake of X1 and X2 for the GBC, with a neat storyline attached to justify porting the games to a handheld without being a retread. Aside from the Leg Parts making you permanently dash jump off of wall jumps, they did some cool stuff I wasn't expecting a GBC port of the X games to do. They add a save feature, which is something the SNES games never bothered doing due to how expensive the cartridges must've already been to produce. The downside is if you're playing this on a real cartridge, then the save battery will surely eventually die.

They gave Spark Mandriller extra i-frames after he gets hit by his weakness, which is surprising to me because even Maverick Hunter X didn't fix that. Being able to loop Spark Mandriller is part of the charm, but it's cool to experience an actually challenging version of the fight.

Otherwise, it's a fun little novelty.

EDIT: I didn't realize there was a New Game+ with another 4 bosses to fight. You also unlock Zero assists, but I didn't really use them at all. I like that they made the secrets in Wheel Alligates, Metamor Mothmeanos, and Magne Hyakulegger's stages way easier to get. Getting the Heart Tanks, Subtanks, and Armor Upgrades in X2 was a huge pain in the ass, and I'm glad I remembered where everything was from my first playthrough and it was just made easier. After beating Hard Mode, you get Extreme mode, which is literally just the entire game over again with all 8 bosses available at the same time instead of 4 at a time. I'll play Extreme Mode for subsequent playthroughs if I ever revisit this game, which I probably will.