Acronyms used in Sheets

TM = Terrestrial Moon Regular Moon. Static obstacle, never moves, destruction yields gravel (gr).

TA = Terrestrial Asteroid Regular Asteroid. Most basic moving obstacle, destruction yields gravel (gr).

VM = Vulcanian Moon Static obstacle which destroys all other obstacles on screen when destroyed and yields magma (ma). Destruction causes build up of overheat meter. Overheat meter maxing out causes damage.

VA = Vulcanian Asteroid Moving obstacle which destroys nearby terrestrial type asteroids and explodes other VAs when destroyed and yields (ma). If destroyed near player they also raise overheat meter.

CM = Cryogenic Moon Static obstacle which slows down all moving obstacles on destruction and yields ice (ic). Cools overheat meter. If overheat meter goes too far into negative the players attacks become delayed by 5-10 seconds.

CA = Cryogenic Asteroids Moving obstacle which slows down nearby obstacles when destroyed also cooling down the player's overheat meter if close to them.

NM = Neutralised Moon NA = Neutralised Asteroid These are created when a Vulcanian or Cryogenic Moon explodes and neutralises its counterpart. They hold the properties of TMs or TAs but yield a special material called crystals (cr).

TrM = Trojan Moon Appears as a TM initially but randomly transforms into another kind of moon.

TrA = Trojan Asteroid Appears as a TA initially but while it approaches the player it transforms into another kind of asteroid.

TC = Terrestrial Comet Fastest any obstacle in a given level can move. Always have just 1-2 letters to destroy them but can often catch players off guard on lower levels and even later levels as there may not be any order or warning for their arrival.

VC = Vulcanian Comet When attacked by the player it bounces backwards along a random trajectory / angle destroying any obstacle in its path.

CC = Cryogenic Comet Upon destruction it creates a frozen zone which neutralises "Vulcanian" type obstacles when they enter it and slows down "Terrestrial" type obstacles.

TrC = Trojan Comet Start off on the side of the screen as either "CC" or "TC" but as they near the player they become "VC"

NC = Neutralised Comets Neutralised comets don't really exist. Whenever a "VC" or "CC" is neutralised they just vanish and yield the player crystals (cr).