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| Crystal Caves | |
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| Developer(s) | Apogee Software |
| Publisher(s) | Apogee Software |
| Designer(s) | Frank Maddin |
| Engine | |
| Latest version | {{{version}}} |
| Release date(s) | 23 October 1991 |
| Genre | side scrolling platform game |
| Mode(s) | single player |
| Rating(s) | NA |
| Platform(s) | MS-DOS PC |
| Media | floppy disk (1) |
| System requirements | 80286 CPU, 512KB RAM, EGA graphic card |
| Input | keyboard or joystick |
Crystal Caves is a game written and published by Apogee Software. In the game, you are Mylo Steamwitz, a miner who wants to get rich quick. In order to invest in some ridiculous get-rich-quick schemes, including, but not limited to, starting a "Twibble" farm (compare with Tribble), he travels to the Altairian star system and ventures into the caves in the planets there to harvest large, naturally grown crystals.
Milo comes with a rocket launcher and has to jump and shoot his way through the levels to collect all crystals. The game has a number of identifiying features, such as a gravity inversion powerup, and an unexpected death when you accidentally shoot out a level's air generator.
Like most Apogee games, this game was released in three episodes, the first one being shareware. It was not very popular, because its graphics, animation, gameplay and level design were inferior to those of the Commander Keen series that was released around the same time.
Crystal Caves uses the same game engine as Secret Agent, which was released about a year later.
On 24 October 2005, Apogee released a maintenance patch to fix a bug in the game. The bug sets the user's system clock backwards 100 years after running any of the three episodes on some systems using Windows XP. As the game was released 14 years and one day earlier, it is believed that Apogee now holds the record for longest time between an initial game release and a maintenance patch.