Despite the individually short early chapters, the length increases considerably later into the game and the replay value of each unique chapter is astounding. All of the chapters feel unique, with a huge menagerie of Underworld nasties and other foes, and a wonderfully distinct setting for each, such as exploring an underwater temple in one chapter, and flying into space the next. And yes, that is literally how the game progresses. The game allows you to choose between hundreds of weapons, with encouragement for the player to craft by combining weapons you obtain from chapters, and with unique stat upgrades, and effectiveness in ranged and melee combat. Weapons are split into different categories, so that choosing a weapon is easier based upon your preference and playstyle; no one type is significantly better than the other, they all have their own unique mechanics and benefits, as well as minor draw-backs in order to make the player think about what to use as you progress through the game towards completion.
Every chapter also uses a very good risk and reward mechanic, allowing you to 'bet' your in game currency, hearts, to play on harder difficulties, ranging from Effortless (0) to Nothing Harder (9), which have increasingly stronger enemies, and in greater numbers. You are rewarded for not dying during the chapter with extra points, and dying costs you a portion of hearts every time, and knocks down the difficulty by 1 stage. In addition, rather than bet hearts and quickly earn them back on higher difficulties, playing any lower than Standard (2) will force to to simply pay up, and those hearts are likely impossible to make back in a single play through. You also receive better loot throughout the chapter and as reward at the end of the chapter. Playing at harder difficulties is also mandatory for fully completing the game, since most levels have 'Intensity Gates,' which can only be entered at minimum difficulties, since treasure chests throughout the levels are required to have been looted in order to count towards that chapter's completion.
Another point to make about this game is the soundtrack. I do not believe I have ever heard a better soundtrack to a video game outside the works of Nobuo Uematsu and Yoko Shimomura. The music is fully orchestrated, and unique tracks are used for every chapter, with a shared and kick-ass boss theme to boot. Multiple genres and styles of music are used in the game, but the most common would have to be orchestral, giving the game a truly epic feeling despite the loveably silly circumstances. The voice cast is also nothing to sneeze at, with seasoned veterans Troy Baker, Hynden Walch and Fred Tatasciore joining the fray for the English version as just an example.
The game also has a multiplayer mode, for battling other players either locally or globally, with the items and abilities you have obtained so far. There is either a team battle, Light vs. Dark, which pits teams of 3 against each other for victory. The other is a simple free for all battle; every man and angel for himself. The multiplayer doesn't add anything significant to the single player, but feels like a good and worthy addition to the game- just as all games should be. Single player should always be the priority, and then multiplayer can be built upon.
All in all, Kid Icarus: Uprising is an amazing experience from start to finish, and then beyond, with countless unlockable items and achievements to entice you to continue playing for hours on end.