There is a shareware version available for both versions of this game which includes the first sector, the Bravo Sector. The full version can still be bought online today. Apogee sells only the DOS version while Mountain King Studios sells only the Windows version. If purchased, a download of the full version will be provided. Raptor is no longer available for purchase as a standalone physical product.
The Windows version of Raptor features slightly improved graphics and audio, alongside a number of other very minor changes. The game itself remains the same between both versions, and many of the glitches and secrets are retained. However the Windows version is plagued by several issues with the controls which do not exist in the MS-DOS version. When using the keyboard in the Windows version, the player ship's mobility is restricted to half of its normal speed, which makes gameplay much more difficult. If the player chooses to use the mouse to control his ship, he is instead unable to move to the extreme right side of the screen.
If the game is started when the computer's internal clock matches one of several predetermined dates (for instance, December 25, one of the programmers' birthdays, etc) additional objects or enemies will appear on each stage which take the form of cows, monkeys, lizards, etc. This also changes the opening title screen and sound effects.
One can also activate these additional enemies by pressing all the buttons that appear at the bottom of the loading screen (to do this using the keyboard, not the mouse, press the 'S' key, then the '1', '2', and '3' keys at the episode selection screen).