Settings
The player can log on to Gamespy (No account needed) and their profile will say the they are up to the level The Silent Cartographer. It also has all the normal settings information, such as audio and video settings, normal features and preferences. The demo still retains its full version graphical master graphics.
Single Player
Campaign
The player can play the Silent Cartographer mission. This demo is for Mac and PC, because Halo:Combat Evolved has the game for Xbox, PC, and MAC. You cannot save the game; if you click continue after quitting, you will start the level again.
Multiplayer
Game Servers
The player can log onto Gamespy but needs to enter in the IP address. Also you can use GameRanger but you need to turn on GameRanger and you need to again enter the IP address, or you can go to the 'join game' page.
Blood Gulch
There is only a single map in the demo, Blood Gulch, capable of hosting up to sixteen players. There are the two gametypes, CTF Classic and Slayer.
Trivia
When the player closes the demo, an advertisement for the full Halo PC appears. However, one can simply bypass the advertisement by pressing Alt + F4 or by using the -novideo command line parameter.