Revenge of Defender Trivia
DevelopmentHidden Treasures never received any money from the US release, probably due to Epyx declaring Chapter 11 bankruptcy.
Konix multi-systemThe game was also under development for the unreleased Konix Multisystem console. Some screenshots survive, and show something of similar visual quality to the ST and Amiga versions.
The Amiga reissue was reduced so as to fit on a single disk. This meant that the introduction was lost, and also caused the game to crash when attempting to access the High Score table (because it was looking for the ORIGINAL disk one).
In order to speed up the game on Tandy and PCjr computers without having to resort to only 4 colors, 160x200x16 mode is used instead of 320x200x16. Also, the background does not take up the full screen like in EGA and MCGA modes, so only a portion of the screen needs to be scrolled. (CGA and Hercules modes also only have a background on part of the screen. In these modes not only is it a speed advantage, but due to the more limited color palette the game is easier to see than if a background filled the entire screen.)
256 color MCGA mode runs uncontrollably fast on modern machines. The lower resolutions, however, run a little too fast but overall at a much more reasonable speed. It seems that at the time the developers decided no one could run 256 color mode too fast, but some delay was needed for fewer colors!