Tetragon - a Casual Basic Game for old computers. Game concept derived from ZNAX.

Requirements: (Some of these are guesses which is why I'm hoping for some feedback)
8088/8086
CGA
640kb ram
Dos 5.0

Fresh Game:

Selecting a Rectangle:

Success its scoring and replacing those boxes.

I've only tested in DOSBox and on my Pocket386, both of which work well. If someone could test on a 8088 and let me know if redrawing the boxes is a painful experience or see if the program launches with 512kb, that would be appreciated.

This game was never my original plan, when I hit some design constraints on the original project and had switch tactics, I thought well I put some decent work into this approach, how can I make something from it.

Some notes:
- Although its called Tetragon, the only shapes it will recognize is squares or rectangles.
- Mouse only. I suppose you could use something like MouseKeys, but I did not add keyboard support at this time.
- If you make a mistake on selecting corners 1-3, you can click on them again to undo. Clicking the 4th corner will "Send it" so if you make a mistake then it costs you a turn.
- High Score is lost when you exit. Game does not attempt to do any writes to filesystem.
- It might be possible that no rectangles/squares exist? This was common when I was using 14 colors on the board, but after reducing it to 5 colors on the board- I have never seen it happen. Even tho its not a time based game, I didnt want to make searching for squares/rectangles a tedious process.

Improvement Ideas:
- Add support for parallelgram / rhomus?
- Keyboard support?
- Save High Score?
Realistically I wont implement any of these, and probably wont add others but I'd like to hear suggestions.

Download Link - https://drive.google.com/file/d/16Qp_ZIzEk2YR … iew?usp=sharing