Tommy's Cryptoquips

The crypto algorithm used is a simple one-to-one letter mapping. Some letters may be mapped to themselves, but most aren't. To "solve" the cryptogram, you just have to figure out the mappings for all the letters used in the cryptoquip.
Solo game (1 player):
In the solo game you play against the clock, trying for the minimum time on 10 puzzles. You can give up on a puzzle (by hitting function key F9) but you get zero points. If you don't give up, your score is based on the number of seconds you took, maximum is 1000. If you can't get it right in 2000 seconds (approx 30 minutes) you get a score of zero. At any time you can hit the esc key causing the computer to reveal one letter mapping for you at the cost of Halving your score. High scores are automatically kept by the computer on disk on the file tomcrypt.scr, which you can erase if you want to clear the high scores.
Team game (2-6 players):
In the team game, you guess the cryptoquip competitively. Teams play in rotation, the first team up being chosen randomly by the computer. The program helps by revealing one letter mapping before starting the guess-clock.
You have 30 seconds to get the right answer or the next team is up. If you guess the entire cryptoquip you win. Your team scores 1000 play dollars if the computer only revealed one letter, 950 dollars if it revealed two letters, down to a minimum of 100 play dollars. If you want to give up before the 30 seconds is over and let the next team play, just hit function key F9.

What is abandonware ?