Not a bad adaptation of the classics but best left for fans.

User Rating: 6.5 | RockMan X: Cyber Mission GBC
Megaman Xtreme for the GBC is more or less a port of the original Megaman X and Megaman X2 with a few game play twists and a new story.

Story: X finds himself waking up in the old city highway destroyed during the first maverick rebellion; everything startlingly looked the same as it was many years ago and X even encountered Vile.
After defeating Vile X finds himself in the hunter base with Zero. Apparently someone broke into the mother computer and corrupted past data information creating worlds that mimic the past. It would have been normally impossible for anyone to escape but thanks to Middy, a child prodigy with advanced knowledge over the mother computer network, X managed to get out alive.
X must now travel to the mother computer core in order to find the cause of the corruption and will have to fight through protection programs that take the shape of his past enemies, and thus a new battle began.

Game design: As you would expect the port to the GBC did quite a bit of damage to the original visuals but otherwise the graphics look descent for a GBC game.
You will be going through 4 stages from X1 and X2 and will fight in a few extra stages, after completing the game you can unlock hard mode to continue the story, hard more isn't really an increase in difficulty but rather new challenges with different sets of bosses and continues the unfinished story of the normal mode.
After hard mode you can unlock Xtreme mode which just makes you go through all 8 bosses but with no story adaptation which is convenient but kind of pointless.
The environments are shorter in the GBC version and seem a bit small, either that or the figures are way too big.

Game play: With the limited button on the GBC X quite controls well, but not as comfortable as in the traditional games.
You press B to shoot and A to jump, double tap the D-pads to dash and view the menu screen to change weapons, and because the limited button won't allow for wall kick dash jumps it is set automatically, so you will jump high distances automatically which is great for long jumps but annoying for short jumps.
The capsule system makes a return, you will be using the Light armor, all body modules work the same, the Head module allows you to break objects with your head, the chest module increases defence, the arm module will give you an even more powerful shot and will also allow you to charge special weapons, the leg module doesn't really do anything since you already have the dash system from the start.
In the hard mode you will get new capsules called the Zero scramble system, basically each capsule will allow you to summon Zero and do some damage in 4 different ways, since summoning Zero will cost all energy you can only summon him once per move, it's a nice feature but not very useful in any way.

Sound: Soundtrack from the previous games are reused and downgraded for the GBC, but that's not to say they sound bad in fact they sound pretty descent, sound affects are OK as well.

There is not much to say about Megaman Xtreme since there is nothing really extreme about the game.
The game is pretty short and doesn't really do well to attract audience besides dedicated fans.
The story is a bit average and not much has been done on the translation department and the plane environments don't exactly add extra quality.
The graphics on the GBC can be a problem as some affects can fade and you won't be able to see attacks coming to you at times, also the figures are way to big making dodging an issue.

Megaman Xtreme is a classic megaman game and is worth a shot but only amongst fans of the series.