download them from garrysmod.org
Chat with our AI personalities
yes, you can use props/characters from all games that are made by valve
there is a plugin for blender that allows you to make propsanother free alternative is to use XSi Mod Tool which is a free version of the professional package with templates of HL weapons
runOnTick(1)
you cant unless you know something i dont actually it is possible to make an underwater base but not in gmod. you can use the hammer editor to make a map then add water to it and take out the water in the parts of the map where you dont want it. if you have css you can map it with that and i thing you can also map it with tf2. there might be other source games which you can map it with but if there are i don't know about them. and once your done making the map you can export it the which ever game you used then play it on gmod. hope this helps!
gmod is for PC only