Features:
- Show your friends who is the fastest typist!
- 8 modes requiring a variety of skills aside from typing speed and correctness
- Online and LAN multiplayer for two players
- Add your own word lists for additional languages and special challenges
- Adjustable singleplayer opponent
- Customizable color scheme
- Additional benefit of providing typing practice
Additional features of the Steam Edition:
- Matchmaking (but please note that the playerbase is pretty small at the moment)
- Achievements
- Leaderboards
- Trading Cards
In regards to Multiplayer, the Steam version is fully compatible with the free version. As the serverlist is a Steam exclusive feature however, the other player needs your IP address to connect directly.