High Quality Game that's pretty short but very hard and very entertaining.
Gunstar Super Heroes is a sequel to the original Sega Genesis game: Gunstar Heroes. While it is a sequel, its also, almost, a retelling of the first game. Many of the stages are the same, level design, enemies, bosses, there are some new gameplay elements and altered stages but a good chunk of the game feels exactly like the original game, but now on a handheld.
Story
You play as Red or Blue and take orders from Yellow (look at the box art and you should tell who's who). Some empire wants to ressurect Golden Silver and destroy the world and needs 4 gems to do so. The heroes of the first game got the gems, lost them to the bad guys and powered up Golden Silver and it was defeated. Same exact deal here only the heroes are a new generation. The Empire wants to ressurect it and needs 4 gems to do so, you get the gems, lose them, then fight Golden Silver again. Hardly a story but oh well, a fast action game like this normally doesn't have a riveting story.
Gameplay
Both play exactly the same and have 3 weapons to choose from. 2 are the same but the 3rd is exclusive to the character. Melee/Jumping is done with 1 button and shooting with another. By holding up and jumping you do an uppercut jump attack. Press jump in the air, or with another direction and you do an aerial attack in that direction. Really simple control and its beautiful. Shooting done with another button and you can fire in 8 directions. Also beautiful. There are explosions everywhere and tons of enemies to gun down and melee your way through and its a blast the whole time.
There are only 5 levels. Intro Stage, 4 Gem levels, and Final Stage. But you will die. A lot. There different shooting styles like in the first game which gives you control options and 3 difficulties to select though so take your time going through the stages but it is a challenging game for the most part. You have a numerical life counter and if it hits zero, game over, start that stage all over again. There are only 5 stages so being sent back to the beginning of the stage is a fair punishment I find. The levels aren't super long but short to medium length bursts of hardcore action.
Gunstar Heroes (GH) vs. Gunstar Super Heroes (GSH)
GH had better weaponry options. There were 4 weapons in GH; Force (Machine Gun), Chaser (Homing shots) Lightning (Went through enemies to hit more behind) and Fire (Shotgun) and you could carry 2 at once to combine their effects and that was AWESOME. Though this meant you had to find the power ups in the field and exchange em in the heat of battle if you wanted something new. Not a big deal though. GSH however only has 3 weapons Chaser, Fire, and Red gets Force, and Blue gets Lightning. However in this each weapon has a Super weapon that you can activate when the weapon gauge has energy in it to unleash a very large and more powerful version of the attack.
GH Characters were pretty bland but GSH characters were more fleshed out and had more character to them. Wasn't much but it was better in GSH.
Overall
This game is awesome and is a definitely good add for any GBA library. Its short, but pretty damn hard at times but still very fun to play. With 3 difficulty settings you can easily up the ante when you're ready to have a really good time on harder difficulties.
Great game, you chould definitely get it if its up your alley, or pretty cheap. Its much easier than Contra games I'd say since you don't die in 1 hit but it can still be hard and awesome~