There are 2 different formations.  The first one (picture #1) appears for waves 0-15; the other (picture #2) appears for waves 16-99.

Waves 10, 15, 20, 25, and 30 have Galaxians that move notably faster than in other waves.  There are no more ‘fast’ waves after wave 30, but if you lose a ship, the wave you’re on will become a fast wave.

Unlike the arcade game, shooting an attacking flagship doesn't temporarily stop the enemy from firing.

BUG: The manual incorrectly refers to the aliens as the Galaxians (i.e. “Galaxian invasion”, “Galaxian fleet”, etc). In the original arcade game, the players are ‘Galaxians’ and the enemies are ‘aliens’.  See the arcade Easter egg entry for Galaxian for more info.

BUG: Your missile is off-center.  The reason is, your ship is 8-pixels wide.  It’s unknown why this was done, as the ship could have been 7 pixels wide.

BUG: After completing 99 waves (picture #3), the counter rolls to wave “0” (picture #4), which is a fast wave.  The next wave starts at “1” again, and the formation resets back to 3 less Galaxians, but the difficulty doesn’t reset.

BUG: If you manage to roll the score without losing any ships, and then earn another free ship (at 1,007,000), the reserve lives icons will become corrupted (picture #5). The game was only programmed to display a maximum of 3 ships, and the values used for 4 or more are bits of actual code from other parts of the program (outside the table).  {George Riley}

BUG: Kill screen - Although nearly impossible to achieve, earning 136 reserve lives would crash the game, since one of the data tables that these pointers are called from begins at $FF70 (triggering a bankswitch and jumping into the middle of an instruction @$D9B5).  {George Riley}

FRYING: Creates wave “0” (see video).  Fry until you see your ship, and then press RESET.  Only 2 or 3 Galaxians will attack, however the game usually crashes in a few waves. {Scott Stilphen}




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