A combination of a shoot-'em-up and a puzzler. Player one controls Grim Blaster, defeating enemies with his gun. Player two attempts to crush enemies in a puzzle environment. Each time an enemy is defeated by one player, it appears on the other player's field.
A spinoff of the somewhat reasonably prolific Gussun Oyoyo series, this Playstation title is a lighthearted platform-puzzler set in an enemy-infested amusement park. Gussun Paradise also has the distinction of being the only console entry of the series to garner an english release under the moniker of YoYo's Puzzle Park in PAL territories.
A Dreamcast puzzler developed mostly by one Japanese student, Golem no Maigo (also known by its English translation "The Lost Golem") tasks you with guiding the king to the end of every stage by pushing walls around while also ensuring there are enough walls that remain intact to progress.
Another physics-based puzzle by Rovio, this one is more centered on Rube-Goldberg machines and is based on the game Casey's Contraptions, which they purchased the rights to.
In 2000, Songbird Productions produced a sequel, Crystal Mines II: Buried Treasure on CD-ROM for Microsoft Windows. This CD-ROM required the original game and a Lynx to PC serial cable to run, allowing the editing and creation of all new levels. This was followed in 2003 by a cartridge release of Crystal Mines II: Buried Treasure with the original 181 levels and 125 new levels.