I wanna be the Diverse
Once the 2 paths are beat, you get access to one of the most iconic VVVVVV stages in any fangame. It culminates in an epic multiphase boss fight against Vridian and Vermillion that you will never forget.
A final path opens up that has some fairly tricky platforming at times, and a lot of traps mixed in. At the end you are rewarded with 2 more boss fights, the final one again being very memorable.
This is one of the old iconic fangames that everyone should really play.
At the beginning, there are two paths, each of them split into two parts, and each part has a boss. The first part has generic visuals, an the second part is themed after an old game. The boss of the first part acts like a mini-boss (There are no special effects at the beginning of the fight, their names aren't mentioned and they are really simple), and I didn't find any of the mini-bosses to be anything special. The true bosses, however, are quite well-made. Once you beat both paths, the game becomes linear, and you won't see mini-bosses anymore. There are still three bosses, though, all of them really good. One of them is a fight against Viridian and Vermillion, probably their patterns are probably the hardest patterns to learn in the game. The other one is my favorite, a mix of Device's Miku with Luigi, bringing lots of crazy effects, and it's just really good overall. The last one is your last showdown against Luigi, now Ultimate Luigi, combining powers from all the previous bosses (Aside from Device's Miku).
The platforming drags the game down a lot, but it might be worth playing for the bosses, since some of them are quite unique. Would still recommend.
Production Value: 9/10
This is one of those games that starts out looking bad, but it is a fantastic game. Some areas include a Mega man 3 stage, Sonic advance stage (springs) and an astonishingly well put together VVV stage. The final stage was the only one I didn't enjoy too much because it is mostly difficult spike jumps and traps, similar to that of I wanna be the Crimson.
This game really shines through with its bosses. They are absolutely top-notch, 10/10 bosses. I wouldn't change a single one. The final boss, Ultimate Luigi, was the best one of them all. I also love the music chosen for the bosses. There is also a crazy mouse-shaking effect in the VVV boss which freaked me out a bit.
Give this game a play if you haven't already.