Adventures of Lolo

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.

Tropes used in Adventures of Lolo include:

Baleful Polymorph: With Magic Shots, Lolo can zap enemies and turn them into eggs to be used for various purposes.
Block Puzzle: The games are made up entirely of these.
Canon Foreigner: 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!.
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.
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.
The Goomba: Snakey.
Hopeless Boss Fight: The first fight with King Egger in Adventures of Lolo 3.
Instant Win Condition: Once you collect the item from the chest, all enemies in the level (and their shots) disappear.
The Juggernaut: Rocky.
King Mook: The bosses in Lolo 3.
Lava Is Boiling Kool-Aid
One-Hit-Point Wonder: Lolo (and Lala).
Pink Girl, Blue Boy: Lala and Lolo, respectively.
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.
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.
Reptiles Are Abhorrent: Subverted with the Snakeys, who are enemies, but harmless, immobile and pretty cute.
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-Persistent Predator: Alma, once she gets rolling.
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.
Updated Rerelease: 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.
Waddling Head: Lolo and Lala.