I got you on Incubation (a great player imho) but not Tannhaeuser, so I can't compare. I assume then it's got an Action Points type mechanism, with lots of
a: bugs/bad guys
b: weapon breakdowns
c: panicking friendlies
d: puzzle-based scenarios
Might have to take a look if so.
Tannhauser has a great PC game style.
It is pure tactical mini squad combats and missions.
It has bad guys (your opponent), tons of weapons and special abilities fully customizable and puzzle based scenarios (and long scenarios such as campaigns) ...
try it and you will like it if you like squad tactical missions ...
And it has a PC version for multiplayer game in Vassal !