Majin and the Forsaken Kingdom was a game built on three somewhat unstable pillars: action, stealth, and puzzle. So, the
Challenge Pack offers gameplay sequences that are based solely on those three types of play. For example, Battle Challenge puts Tepeu and Teotl in a room and has them deal with wave after wave of progressively stronger enemies. Tepeu's kind of a weakling, but Teotl is... well, a beast. It's standard button-mashing combat with a little bit of artificial intelligence brutality thrown in, but if the both of you are taken out of commission, you'll have to restart the entire challenge. Fighting for eight minutes straight loses its appeal when the combat mechanics are so simple, and even more so when you die and have to go all the way back. The frustration carries over into Sneak Challenge, which punishes you with an instant game over if you're so much as seen. Puzzle Challenge has Tepeu and Teotl completing environmental puzzles in order to progress to the next challenge level.
Each of these Challenges pits you against the clock, and if you're good enough, you'll eventually unlock costumes for Tepeu and Teotl. The costumes added some welcome longevity to the original game, and it's nice to have the option to acquire more, but I liked how they became available as part of the natural progression of the game. This just feels like a way of rewarding the player for forking over an extra two dollars and slogging through some tedium.