Adventures of Lolo is a trilogy of Block Puzzle games released on the NES, and part of Hal Laboratory's Eggerland series (which began its life in Japan on the MSX computer system). A beast known as the Great Devil (King Egger) has kidnapped Princess Lala and, in typical bad guy fashion, imprisoned her at the top of a Death Trap and monster-laden tower. It's usually up to Lolo to solve the puzzles with and climb to the top and rescue her. The third game in the trilogy allows you to play as either character and, in the final four levels, be required to rescue the character you sent to finish Level 13.
The Lolo games provide examples of:
Baleful Polymorph: With Magic Shots, Lolo can zap enemies and turn them into eggs to be used for various purposes.
Collision Damage: Only Armas and Skulls. All other enemies either have specific attacks or can't kill you on their own. You can also get killed by Don Medusae this way, but it's very rare that an opportunity to do so shows up.
Difficulty By Region: The Japanese versions of Adventures of Lolo 2 and III (released as Adventures of Lolo and Adventures of Lolo II since the American Adventures of Lolo was not released in Japan) have completely different, harder puzzles. Justified as the American version contained puzzles copied from older Eggerland games.
Early-Installment Weirdness: The first game, Eggerland Mystery, is the only one to contain Diamond Framers instead of Heart Framers, a "Type B" gameplay mode in which each puzzle is timed, or points.
Expy: Characters named Lololo and Lalala (who look like Lolo and Lala, only smaller) appear as minor antagonists in some Kirby games (another series made by Hal Labs), and as his friends in the anime series Kirby: Right Back At Ya!.
Eye Beams: Medusa, who'll petrify and zap Lolo with them if he walks within her field of linear vision. Don Medusa, who has the same ability (but is more dangerous because he can move back and forth), uses knives instead. Lolo doesn't even have to be looking at them for the eye beams to work.
Level Editor: Featured in three of the Japan-only releases, the one in Revival! Eggerland being the most detailed featured, while Departure to Creation has features accurate to the NES games.
No Export for You: There are several games in the Eggerland series, but the three Adventures of Lolo games were the only ones released in America (and the first Adventures of Lolo was only released in America because it consisted entirely of puzzles from older Eggerland games).
Europe did get Eggerland Mystery for the MSX and the Game Boy Adventures of Lolo though. Supposedly, Eggerland 2 was also released there, but it was most likely that those copies were bootlegs.
Press X to Die: Select is a suicide button in case you get stuck and there's no way for you to die on the level.
Purely Aesthetic Gender: In the third game, you have the option of playing as either Lolo or Lala. Gameplay-wise, there is absolutely no difference between them.
Regional Bonus: The Japanese version of Adventures of Lolo for the Game Boy had only fifty levels. The European version increased this to one hundred forty-four, and added a tutorial and Super Game Boy support.
Save the Princess: The first two games. The third game can avert this is you're playing as Lala, as in that case you eventually have to save Lolo from the Big Bad instead.
Spell My Name with an S: The armadillo enemies have been referred to as Alma, Arma, and Armma. Lolo and Lala has also been referred to as Roro and Rara in-game before, but this could simply be a case of l and r mixups.
Super Drowning Skills: Lolo and Lala can float on rivers using eggs, but if they should sink while one is still riding on them, they'll die instantly.
Super-Persistent Predator: Alma. Once she gets rolling, she'll chase you throughout the level until you stop on a flower bed, the only other terrain beside water/lava where she can't follow you.
Taken for Granite: Happens to the people of Lolo and Lala's kingdom in the third game, prompting the two to set out on their adventure.
Updated Re-release: Revival! Eggerland was Eggerland for Windows 95 updated to run on Windows 98 and ME.
Variable Mix: Adventures of Lolo for the Game Boy (European version only) had some levels in which the BGM changed depending on which direction Lolo was facing and whether or not he was standing on flowers.
Video Game Remake: Eggerland 2 for the MSX 2 was remade for the Famicom Disk System as Eggerland, featuring redone graphics and sound, new levels, save files, and a confrontation with King Egger at the end.