Play Episode One (1991)
Mylo Steamwitz lands on Altair to dig up enough crystals to buy a twibble farm. Sixteen caves wait below the main mineshaft, in any order you like. Games are saved in this browser.
CRYSTAL CAVES
Episode One: Troubles with Twibbles
Apogee's 1991 DOS platform game, rebuilt for the browser from the original shareware files.
The Caves
Spiders, rockmen, snoozers and laser turrets; doors and levers; switches that turn off the lasers or the lights; caves where gravity runs the wrong way. Collect every crystal, then leave through the airlock.
HOW TO PLAY
Walk into one of the 16 doors on the main level to enter a cave. Collect every crystal in it and the airlock opens; walk into the airlock to go back up. A green flash means you've got them all.
Mylo can be hurt twice; the third hit sends him back to the start of the cave, with the score he had when he went in. Ammo for the rocket pistol lies about the caves.
Stand in front of a lever or switch and press fire to use it. Bump your head on platforms: some hide crystals. Look out for the power pill P, the stop sign, and the mushrooms (not the green ones).
CONTROLS
| Left / Right | walk |
| Z, Space or Ctrl | jump |
| X or Alt | fire the pistol, pull a lever, flip a switch |
| Esc | menu: instructions, sound, save and restore (on the main level), restart a cave, quit |
| P | pause |
On a Mac, use Z and X: Ctrl with an arrow key switches desktops. On a phone or tablet, on-screen controls appear under the game. A game controller works too: the D-pad or left stick walks, A jumps, B or X fires, Start opens the menu.