There is also a 'safe' resource field behind each base. Be aware of the several chokepoints that can be traversed only with air units. You fight with whatcha got, that's what. As long as your temple columns exist, your army keeps growing. Beware though, as your rivals are gunning to destroy your temple and stamp you out.
Spawn comes as a self-extracting executable.
To install Spawn, download spawn.exe . Like Assault and Fencepost games, Spawn can only be played on a map designed for that ruleset. In any case, this sample cineractive shows some of what's capable using the Dark Reign 2 cineractive tools. It's a zwp file, not an avi, so you'll need a copy of the game to run it. As the name implies, 4bullseye is laid out like a giant target, with concentric circles ringing a resource-rich center.