Mech/stalker = 64x64x64
Hatchling = 32x32x24
Drone = 48x48x48
Humans = 32x32x56			
Breeder = 64x64x64 
Engineeer = 64x64x64 
cocoons are 32x32x32

Maps should be somewhat flat (atleast around the bases), so that
all classes can get around, and also so defenses and new teleports
can be built. 

use monster_cocoon for the alien starting spots
regular info_player_deathmatch's for the human starts

There should be NO ammo and NO health in the levels.

Try not to use water or ladders..

_There should be no areas where you need to crawl_. All passages
should be about 96x96. This is unfortanetly a problem of the
player prediction and related to the fact that monsters in gloom
are bigger than the standard player. If you make crawlspaces,
even stalkers will be able to craw thru them and it will look
stupid.

other entities:

monster_healer
monster_obstacle
monster_spiker

misc_turret
misc_detector