Sim Ant - Released in '91 will most likely require DOS BOX to run, as I would have expected on Win7 as well.
Sim Park is also DOS based.
Sim Safari looks like it may use a 16bit installer which will work on 32bit Windows, but not on 64bit Windows.
(the game should run if copied from a 32bit to 64bit Windows though )
- Check the sites below for download versions that have been tweaked for 'modern' Windows versions.
DOS based games will generally install with DOS BOX ( I assume as this is how the games from Good old Games
work, but I've not used these two sites ).
old-games.com/download/4403/sim-ant
old-games.com/download/4414/simsafari
This one may not install with DOS BOX, as the suggest using it .
.