The Nintendo NES Rockman 2 - Dr. Wily no Nazo (Japan) [Hack by Small Apple v1.0] (~Rockman 2 Dash Plus) is a modified version of the classic action-platformer game Rockman 2: The Final Boss, developed and published by Capcom. This hack is notable for its inclusion of additional content, including new levels, enemies, and power-ups, all while maintaining the original game's charm and spirit.

For those unfamiliar with the original Rockman 2, it was first released in Japan in 1989 as Dr. Wily no Nazo (Dr. Wily's Puzzle), followed by its international release as Super Mario Bros. II in North America and Europe due to licensing issues. The game follows the story of Rockman (also known as Mega Man) as he battles against his arch-nemesis, Dr. Wily.

The hack, created by Small Apple, takes the original game's core mechanics and adds new content, including:

1. New Levels: In addition to the existing levels, the hack introduces several new ones, each with its own unique challenges and enemies. These new levels expand the gameplay experience and provide more opportunities for players to showcase their skills.

2. Enemies: New enemy types have been added to the game, including some that are not found in the original Rockman 2. These new enemies require players to adapt their strategies and techniques to overcome them successfully.

3. Power-Ups: Power-ups have also been included in the hack, giving players more options for progressing through the levels. This adds a fresh layer of excitement and challenge to the gameplay experience.

4. Graphics and Sound: The graphics and sound effects of the original game have been preserved, providing an authentic experience for fans of Rockman 2. However, some minor adjustments have been made to enhance the overall aesthetic appeal of the game.

The hack is available for download from various online sources, including ROM sites and emulation forums. However, please note that downloading and playing hacked games can be risky, as they may contain malware or viruses. Users should exercise caution when downloading and installing hacked games, and ensure they have a reputable antivirus program installed on their device.

In terms of age ratings, the original Rockman 2 received an ESRB (Entertainment Software Rating Board) rating of "E" for Everyone, indicating that it is suitable for players of all ages. However, due to its hack status, the ESRB has not officially rated the modified version. As a result, some age ratings may vary depending on the region and platform.

Age rating information can be found in various countries:

1. United States: The original Rockman 2 was rated "E" by the ESRB. However, due to its hack status, the ESRB has not officially rated the modified version.

2. Europe: The original Rockman 2 received an age rating of "Pegi 3+" from the UK's Interactive Software Association (ISA), indicating that it is suitable for players aged 7 and above.

3. Australia: The game was classified as "PG" by the Australian Classification Review Board, indicating that it is suitable for players aged 5 and above.

4. Japan: Rockman 2 was released in Japan with a rating of "A" from the Japanese Entertainment Software Association (CESA), indicating that it is suitable for players aged 10 and above.

In conclusion, The Nintendo NES Rockman 2 - Dr. Wily no Nazo (Japan) [Hack by Small Apple v1.0] (~Rockman 2 Dash Plus) is a modified version of the classic action-platformer game Rockman 2: The Final Boss. This hack offers new content, including additional levels, enemies, and power-ups, all while maintaining the original game's charm and spirit.