http://www.sportsmogul.com/games/football2k12.html
Football Mogul 2012 is a text based simulator and is 100% free to download, here are some of the features.
Start in any season from 1970 to 2011
Rosters for every year since the AFL-NFL merger
Updated year-by-year stats for every player
Includes all 2011 draftees, plus undrafted free agents
Opening Day rosters for 2011-2012 season
Stats and ratings for
over 2100 active players
over 62,000 player seasons
Accurate season schedule for the 2011 season
Advanced play designer and playbook editor
Play-by-play describes each play as it happens
Box scores and play-by-play files created for each game
Realistic player development and aging
Play up to 100 seasons into the future
Create your own 'Football Mogul Encyclopedia'
Automatically loads files from previous versions
and some additional features
Improved game engine
Smarter trade AI
Greatly improved draft strategy
400% faster simulation speed than Football Mogul 2010
More realistic talent distribution in the college draft
Forty years of historical accuracy
Historical rookies loaded for each college draft class
Correct schedule and playoff format for each season
Enable or disable overtime (which was added in 1974)
Additional league editing options, like the number of wild card teams
Hotseat play
Two players can compete head-to-head using the same computer
Keyboard shortcuts for in-game playcalling (so you don't have to fight over the mouse)
Support for online play
Schedule generation for shorter seasons (as few as 4 games)
Schedule generation for custom league configuration -- even for an odd number of teams
Fantasy drafts with more than one human-controlled team
"Import Playbooks" feature lets you quickly load playbooks designed by each team's owner
Strategic options
Set your team to run a '3-4' or '4-3' defense
Adjust the run/pass balance of your offense
Fine tune your game plan by customing your playbook
Advanced playbook editor
Easy interface lets you quickly edit existing plays or build a playbook from scratch
Editable folder names and play names
Load and save playbooks for use against different opponents, or to share online
Playbook tracks the success of each play in a variety of offensive and defensive situations
Supports custom offensive and defensive playbooks for every single historical team
You can even redesign plays in the middle of a game
