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Prototype
Differences
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The
title screen is very different and has a different
logo
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| The copyright is 1988 instead of 1989 |
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All the text
screens (high score, start and end of game, end of
of round score tally, etc.) use Mode 8 graphics with
artifact colors
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| The towers shown on the start of level screen
are different heights depending on how high they are in
the actual level. In the final version they're all
shown as being the same height. |
| The towers on the start of level screen are
solid colored instead of being made of bricks |
The mine enemy that rotates around the tower has
corrupted graphics
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The bonus round has a bug in the parallax
scrolling where the layers will speed up and slow down
depending on how much is going on on the screen.
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| The bottom of the tower at the end of the bonus
level is brown instead of gray |
| The difficulty level has been adjusted in some
spots |
| There is a line that appears across the bottom
of the screen. This line seems to move up and down
depending on the action occuring on the screen.
This line is in the overscan area and is not visible on
a real TV. |