Classic megaman, some challenges that are fun and some boring ones. But well, it's megaman!

Amazing Game, a parody on RPGs that is really underrated and a great sequel to the first game. The story is funny, and when it gets serious out of nowhere it is, most of the time, really done well.
Compared to the first game, the tone is really different and the game itself stops being a complete parody around the end of the first "chapter" (Overture).
The gameplay keeps the core mechanic of the first game and greatly expands it, being basically Hero 30 with classes, a new revamped Allies system and skills. It kinda slows down compared to the first one thanks to the skills but there is a way to turn their effects off to get the feeling of rush from the first game.
While I do recommend playing its prequel first, especially because the story has some important ties to the first one, it is not required at all and most of the jokes and characters won't really stop being interesting.
The crafting and cassino system are not really well done, but they are not required at all and are clearly there to keep the game going after it ended, though are not executed really well.
On the other hand, the Time Attack, Map Creation are really cool and can keep people who really liked the game interested. The game has some really cool quests, but that can be kind of "grindy" if people didn't really like the Global System, which is a system that tranforms the game into a more traditional RPG outside of the main quests.
Finally, the game has loads of content, and if people liked the core gameplay, they really won't be running out of time anytime soon, as long as they have the coins needed to keep going.