Both sides need to opt into a larger num_edicts value.
So the fix I am doing here will be to add a key to liblist.gam to allow this to be larger per mod, mod teams can then use that. For CS 1.6 we will also increase the value used (also in liblist.gam). Note that if you do increase it in your mod you also need to update your delta.lst to have enough bits for the new ent range.
Nothing extracted yet.
I remember having tested to increase entities limit with -num_edicts and it seems that there is a hardcoded limit on client or something like that, preventing engine from passing all entities datas to client.