All three games have Steam Cloud enabled for save
games.
Fallout 1 & Fallout 2 can be launched in either
default or classic versions. Default allows for high resolutions and Classic
is the original, unmodified release.
Fallout Tactics is unmodified. Multiplayer works
with direct connect.
While Fallout 1 and Fallout 2 can run on Windows
8, Fallout Tactics is not Windows 8 compatible.