Upgrade to the "Pro" version of this application to fully experience all of the career modes without any limitations. This means you can start your career with any fighter, anywhere in the world. Additionally, there is a "Backstage Pass" option for those who want to save their changes to all 300 fighters and create dream matchups between them. With complete control over the rules, you can choose to stick to traditional 1-on-1 fights or have some fun with up to 10 fighters in ridiculous contests.
The game features an interactive tutorial to help you get started, but the basic controls are as follows: use the cursors to move (double-tap to run or dash), press S to strike (with a direction to aim high or low and left or right), and press S plus another button for one of three powerful attacks. Use G for grappling, transitions, and counters, B for blocking, moves, and escapes, and T for taunting, pinning, and referee duties. You can also use the block and taunt buttons together to pick up or drop nearby objects, and the eye button to change focus if needed. The health meter allows you to switch between characters whenever possible, and the clock button lets you pause, quit, or adjust camera options.
If you need more detailed information on the controls and moves, you can consult the online guides at http://www.mdickie.com/guides/mma_moves.htm. It's important to note that this game is set in a fictional universe and is not affiliated with any real fighters or promotions. So let your imagination run wild and create your own unique MMA world with this application.