Would it be possible to change the cube model? I am (attempting) to create a mod, and I would like to change the cube model, without having a 'prop_...', just the plain cube model. If it is possible can someone instruct me?

You just have to replace the original model (same name, path).

Thanks, also I wanted to know if it is possible to load levels when you are done with another. For example, I have a custom map, I finished playing, and I would want another level to play-but for a mod, not with the menu in game with 'next map'.

The best way would probably be to use a point_servercommandto run a "map <mapname>" command.

TeamSpen210 wrote:
The best way would probably be to use a point_servercommandto run a "map " command.

I just read about it and it said using commands with spaces and quotation marks would crash the game. How would I do 'map lvl2' without quotations?

OnStartTouch
ServerCommand
Command
Map lvl2
0.00

CamBen wrote:
OnStartTouch
ServerCommand
Command
Map lvl2
0.00

Wow...

Also, I can't figure out which model the cubes use. I am in the model viewer. Would it happen to be 'props/metal_box.mdl'?

an arguably safer and easyer way to change levels is point_changelevel, which should be mostly self explanatory on how to use. works perfectly.

EDIT: and, yes. that's the model. but it also uses 3 other models which i dont know, for the sphere, laser, and antique cubes.

tile wrote:
but it also uses 3 other models which i dont know, for the sphere, laser, and antique cubes.

You have the models name on the wiki

tile wrote:
an arguably safer and easyer way to change levels is point_changelevel, which should be mostly self explanatory on how to use. works perfectly.

Yes, absoutely better than point_servercommand.
How to use it can be read in Valve wiki (F1 in Hammer to open it).