Bump - I honestly never knew this till I read it today in a very Joystick mag -
TEMPEST
The secret techniques that can be used to achieve high scores in Tempest are among the most powerful we've found. Not only will these techniques improve your score, but they can be used to earn free games, which can be used to practice these techniques, which can be used to earn free games, which...
Here's how it works: First, you must complete Level 8 (the red level) and earn the 188,000 point bonus. Then carefully shoot spikes (worth one point apiece)
until your score ends in one of the two-digit combinations listed below. After reaching the combination you want, use up all of your remaining turns by running into enemies. Then wait for the effect listed below to take place.
00 - freezes screen
01 - access to bookkeeping totals
05 - allows playing during attract mode
06 - 40 free credits
11 - 40 free credits
12 - 40 free credits
14 - credit sound without actual credits
15 - credit sound without actual credits
16 - 40 free credits
60
17 - 40 free credits
18 - 40 free credits
41 - last two digits of score switch
42 - score increases quickly
46 - allows following game to start at green level
50 - player moves by itself
51 - player moves by itself
60 - objects drift down
66 - objects drift right
67 - objects jump
68 - objects drift up
70 - objects drift up
The most useful combinations are those that earn you 40 free credits (06, 11, 12, 16, 17, 18) and the combination (46) for the
"secret jump to green" (de-scribed in the April 1983
JoyStik Winning Edge).
Another good trick is to stop at 05, which allows you to play the attract mode, and then pause at one of the other combinations while you're playing— its effect will take place in-stantly, as if you had ended a game with that score.
Two additional combinations work only in the attract mode: 46 will generate a random-colored level with the wrong enemies for that level (e.g., a dark blue level with fuseball tankers), and 48 will award you 255 extra turns.
Atari has provided a modification that will prevent these tricks from working, but most of the Tempest machines we've tried do not have the modification.
I wish i had known that back in the day !
