in that level. Each cave consists of some simple puzzles to solve. Pulling a lever will open the door of a corresponding colour. There will also be switches that Mylo can use to activate and deactivate obstacles. Mylo is armed with a rocket gun to destroy enemies and obstacles. Mylo begins the game with five rockets, but can collect more as the game goes on. There are many other power-ups to help Mylo: P-Pill – Supercharges Mylo's gun so it can destroy all enemies with a single shot G-Pill – Reverses gravity, allowing Mylo to walk on the ceiling. Stop Signs – Freeze all enemies on the screen, allowing Mylo to sneak past them Mylo begins each level with three hit points. Lose all hit points, and the player goes back to the start of the level. Finish a level with all hit points, and the player gets a bonus score of $50,000. Development Crystal Caves was inspired by Miner 2049er. The main character's name, "Mylo Steamwitz", was coined by George Broussard and was meant to sound like a loser's name. Most graphics were created by Frank Maddin. Development on Crystal Caves began back when George Broussard was still releasing games under the name Micro F/X. A few months into the development (when about 50–70% of the game was complete) Broussard joined Apogee and Crystal Caves became an Apogee product. It was originally going to be released on September 5, 1991 but was delayed for a month. On October 24, 2005, 3D Realms (formerly Apogee) released a maintenance patch to fix a bug in the game which set the player's computer's clock backwards 100 years after playing on Windows XP. Legacy GOG.com released an emulated version for Windows, Linux and Mac OS X in 2014. An authorized remake by Emberheart Games was released in October 2020 for Windows and Linux. It features remade graphics, a new episode, new enemies, and an online leaderboard. References External links Emberheart Games - developer of Crystal Caves HD 1991 video games Apogee games DOS games Linux games MacOS games Platform games Games commercially released with DOSBox Video games developed in the United States Windows games Single-player video games