Mega Man Unlimited

If you didn't know it was a fan game, you'd think it was Capcom's.

A fan-made Mega Man game similar to Mega Man Rocks, only built by a team put together by Philippe Poulin (aka Mega Phil X). Currently it has gotten more then 97% (as of December 2011) of it's coding complete. It's being programmed inside the Mega Man Engine which was designed around Multimedia Fusion 2. The project started out as a simple Flash project, it eventually became a real game, which is being created with a C++ programmed gameplay engine. As with Mega Man 10, it, too, uses an 8-bit art style that's meant to imitate the style of the NES / Famicom games. Unlike Mega Man 10, however, only Mega Man is playable, and he can use the slide and charge shot abilities (the latter of which is an unlockable ability).

Here is a link to the news and update site. There is also a facebook account, where all the latest updates are being posted.

The current plot is as follows: In the year 20XX, the world comes under attack by Dr. Wily's latest Robot Masters, but he claims that they went out of his control. Upon hearing his plight, Dr. Light accepts his assistance. Both scientists discover that an unknown force is controlling them. However, Mega Man suddenly gets attacked by a mysterious robot, which kidnaps Dr. Wily afterwards. As such, Mega Man sets out to stop the Robot Masters' rampage, rescue Dr. Wily and take on the enigmatic robot responsible for these misdeeds.

Tropes used in Mega Man Unlimited include:

Action Girl: Comet Woman
Barrier Warrior: Nail Man's weapon is a shield, after all.
Bonus Boss: Yoku Man, technically speaking.
Breather Level: Much debate has gone about this, but according to at least 1 forum post and the mock-up video of Tank Man's stage, his level may be the EASIEST to get through.
The Brute: Tank Man, hands down.
The Cameo: Hammer Man's use as a miniboss in the latest works, originally intended to be an actual Robot Master but was reworked into a Mini Boss.
Deflector Shields: Nail Shield seems to do this.
Everything's Better with Rainbows: Rainbow Man's Rainbow Beam and shiny color-trippy level.
Expy:
- Trinitro Man was intended to be this for all bomb-thrower Robot Masters, like Bomb Man, Crash Man, Grenade Man, etc.
- In light of that, most of the Robot Masters in this story are Expies of others, like Yo-Yo Man is to Top Man (gimmicky weapon and stage), Tank Man is to Napalm Man (weapon factory & artillery), Jet Man is to Dive Man (deadly level & homing missiles) and Rainbow Man is to Cloud Man (cloud vanish trick and weather themed).
- The entire roster (sans Yoku Man) ended up being inverted ones for the Robot Masters in 10 (which came out during Unlimited's development), amusingly enough.
Follow the Leader: The staff member Starsimsuniverse hoped that the game would inspire other fans, to start their own 8-bit style Mega Man fan games. It did.
Fragile Speedster: Subverted with Comet Woman, but Jet Man apparently runs into things often.
Gaiden Game: According to MegaPhilX, the game takes place any time after the events of 7. It was originally going to occur after 9, then the real 10, but the possibility of Capcom making more sequels forced Phil to adapt.
Glowing Eyes of Doom: Yoku Man.
Gravity Screw: One of the Wily stages will seem to have gravity-switching as a gimmick, much like Gravity Man's stage in Mega Man 5. Also, see the Space Level example below, for a different type.
Hartman Hips: Comet Woman (natch). They're subtle, but still noticeable enough to count.
Improbable Weapon User: Yo-yo Man's razor tipped yo-yos.
Master of Illusion: Yoku Man and all the Yoku Blocks of doom.
No OSHA Compliance: Nail Man's level fits this trope so well, being a half-finished sky-scraper and all.
Nostalgia Level: Averted since the first beta screenshots came out but an earlier design of a mocked up level for Jet Man looked remarkably similar to Guts Man's level waaaaay back in the very first Mega Man game.
The Not-Secret: Played straight and averted. While no attempts are made whatsoever to hide Yoku Man's status as a secret character, all the important plot details have been kept confidential (well, except one, if anyone relies on the trope below).
Off-Model: While the project's official artwork is otherwise fine, the way that the characters' fingers are drawn looks a bit...odd.
One of the Boys: Comet Woman.
Real Time Weapon Change: By using some controller commands, according to the forum, you can switch weapons on the fly.
Scenery Porn: While much of the stages are still under construction, it can't be denied that Jet Man and Comet Woman's stages are definitely this. Then, there's the city shown in the revamped intro sequence...
Shout-Out: Most of the game, but a few more specific ones include Yoku Man's dislike of Rush (most gamers would use Rush or Jet 2 to get past yoku-blocks) and a weird reversed one was Capcom USA using Comet Woman's background on the official Mega Man 10 website.
Smurfette Principle: Played straight with Comet Woman.
Space Level: Comet Woman's level, which is set on a space station with little to no gravity.
Spiritual Successor: The game is intended to be one for Mega Man 3 (much like 9 was one for 2). Similarities include the general lack of Robot Masters with Elemental Powers, the introduction of the slide maneuver, a plot involving Drs. Light & Wily working together, a mysterious 9th Robot Master fought before going to Wily's castle, and one of the Robot Masters having a ridiculous toy-based gimmick.
Sticky Situation: Glue Man's Glue Shot and the level with sticky floors you get stuck on.
Storming the Castle: Once all the Robot Masters are defeated, Mega Man does this to Wily's castle (which already came under attack in this case, ironically enough).
Super Speed: Comet Woman & Jet Man both have this ability.
Trailers Always Spoil: Possibly the case, as the official cover art strongly implies that Bass is behind the hijacking of Dr. Wily, his castle and his robots.
Wackyland: Yoku Man's level with the Yoku Blocks and Spikes of Doom could count, but so does Yo-Yo Man's level proposal.
Weather Manipulator: Rainbow Man works in a weather control station, crates rain clouds with thunder bolts, and can vanish into fog.