First post, by Sadist boar
There are two ways to fix Tower Assault crash in DOSbox 0.74:
1. Disable EMS, XMS and UMB.
2. Type "ver 6.00" to tell Tower Assault that DOS version.
In both cases, use the installer to disable sound.
I got both basic Alien Breed and Tower Assault from old-games.ru, though GOG has them for sale.
Sad fat people are never good at using complex programs.