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Crystal Castles
When it first appeared in arcades in 1983, Crystal Castles amazed players with its sharp graphics and pseudo 3-D mazes. Bringing any 3-D style game to a home computer was though challenge, but luckily programmer Bill Janhke proved to be up to the challenge. No only was Bill able to keep most of the arcade's graphics, but all the gameplay is intact as well. Crystal Castles is one of the more impressive arcade to home conversions out there. |
| Gem Eaters |
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These tall green Centipede looking monsters wander around the maze eating the very gems Bentley is after. For the most part Gem Eaters are pretty harmless as they would much rather go after gems than Bentley, however they can become a nuisance when confronted in a tight space. Gem Eaters are the only creature that Bentley can destroy without the aid of the magical hat! To destroy a Gem Eater simply run over him while he's eating a gem (you'll see it quickly move down his body). However timing is everything and if Bentley isn't careful he'll end up a Gem Eater snack. Gem Eaters can be helpful, as they often clear out hard to get to areas of the maze. |
| Nasty Trees |
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As their name suggests, these trees are NASTY! Quick and agile, Nasty Trees chase relentlessly after Bentley without pause or rest. Bentley can temporarily stun Nasty Trees by jumping over them, but the best way to deal with them is to trap them behind a wall or edge. Although Nasty Trees will eat the gems they walk over, they don't go out of their way to find them |
| Crystal Balls |
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The only future Bentley will see in these dangerous orbs is his own death. Crystal Balls follow Bentley around the maze in a rolling motion, gobbling up gems as they go. While they're not as fast as Nasty Trees, Crystal Balls are just as deadly. |
| Ghosts |
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Ghosts are encountered only on a few levels and are not a standard enemy. Ghosts move in a random spastic motion over a very small area. Use caution when collecting gems near a ghost. |
| Skeletons |
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Like Ghosts, Skeletons are rarely encountered over the course of the game (although they are more common than Ghosts). Skeletons move in a swift gliding motion around the board, but their pattern is random. |
| Honey Pot |
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The Honey Pot appears on certain levels and is worth big points if Bentley grabs it. Even if you're not after bonus points make sure you snag it quickly or you'll run into. |
| Bee Swarm |
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The Bee Swarm is one of the most annoying enemies in the game. The Bee Swarm appears every couple of seconds on levels with a honey pot, and will hover over the pot for a brief time. To get rid of them, simply grab the honey pot while they're temporarily away. If Bentley spends too long on any given board, the Bee Swarm will come down and chase him around the screen (at an alarming speed). Consider them your cue to get a move on. |
| Cauldron |
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The Cauldron is similar to the Honey Pot except it's deadly to the touch (mmm. Bentley stew). Consider it a non-moving enemy and avoid it. |
| Magic Hat |
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The Magic Hat appears on certain levels, and always on the fourth board. By grabbing the Magic Hat Bentley can make himself invincible for a short period of time. At the higher levels the Magic Hat will start jumping around and will turn into a Crystal Ball if not picked up quickly enough. |
| Berthilda |
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Berthilda appears on the fourth board of every level, slowly cruising the level on her broomstick. Berthilda can be destroyed by Bentley if he's wearing the magic hat, although he doesn't have to go after her. Consider her bonus points. |



- The XE version changes screen and gem colors like the arcade game, the 400/800 version stays red and blue
- The XE version has better graphics for the Nasty Trees, Bees, Bentley, the Magic Hat, and Honey Pot
- The XE version uses a flashing graphic for when Bentley grabs the magic hat, while the 400/800 version uses a strange 'Squished Bentley' graphic
- The XE version has attract mode (demo)
- The XE version is around 30-40% slower than the 400/800 version. It is unknown if this is a result of the extra graphics masking or just an intentional move to make the game easier
- The XE version has high score support
- The XE has more music
- The 400/800 has different/incomplete sound effects, such as the death sound that plays when Bentley gets an extra life
- The 400/800 version starts with 7 lives while the XE starts with 3
- The XE version has a ghost effect when Bentley goes behind things. The 400/800 version just shows a darker graphic for Bentley.
- The XE version shows Bentley saying "Oh No!" when he dies and flying off the screen. The 400/800 version just has Bentley standing still while the death sound is played.


| Version | Cart Text | Description |
| 6/1/84 | Crystal HCS 6/1/84 | Late stage beta. |
| ?/??/84 | None | Nearly complete, needs minor polishing. |