One Must Fall: 2097 is a fighting game for the IBM PC compatible, programmed by Diversions Entertainment. It has a sequel, One Must Fall: Battlegrounds.
Released in 1994 by Epic MegaGames, One Must Fall: 2097 replaces the human combatants typical of contemporary fighter video games with large Human Assisted Robots (HAR). These HARs are piloted through a physical and mental link to the human pilots; however, this is merely a plot concept, and it is never shown on-screen, nor does it factor in to gameplay. Eleven HARs and ten customizable pilots are available for play, along with five arenas and four tournaments. (Wikipedia)
CHEATS
Advanced options Hold 2 + 0 + 9 + 7 at any point in the game. Enter the options menu to
access increased height, vitality, damage, difficulty, and other selections.
Deadly difficulty level Press Right several times while "Champion Level" is displayed. The "Deadly Level" will appear. Note: This code may only be enabled in single player mode.
Ultimate level Press O + M + F to select the Ultimate level. Please note: This code may only be enabled in single player mode.
Select robot color Press 1, 2, or 3 on the top row at the robot selection screen to change the first robot's color. Press 4, 5 and 6 to change the second robot's color.
Metal debris Press R + E + I + N while fighting an opponent. Pieces of metal will fall when your opponent is hit. For the same effect with different intensity, hold B + I + G and press a number on the top row.
GAMEPLAY HINTS
Easy money Purchase a Shadow Robot. Max out the Armor, Stun Resistance, and Leg Speed, and minimize the Leg Strength. Fight your way to Raven in North Am tournament. (This may also work with other Bosses.) Continually advance and quick kick during the battle. The combo meter will fill, allowing the fight to end in a perfect match, with a large amount of bonus money.
Upgrade robot quickly If you want to upgrade quickly to another robot (Pyros, Shredder) when in tournament mode, win against everybody except Raven. Lose against him in your first attempt, then win in your next attempt. The game's offering of robots is not based just upon money and your robot.
First fight against Major Kreissack Do the fight with Nova trick. When the two characters that will fight are talking (the screen before the battle), press Esc then press Enter. Your first fight should be against Major Kreissack.
Here is a gameplay trailer if you want to know what OMF was about: