Laser Squad under Virtual PC
Laser squad was a game made by the development team who would go on to create the infamous XCOM series - and it shows many of the hallmarks of the later games. Having said that - I never enjoyed laser squad that much at all. The interface for the game is just a bit too clunky and it completely lacks a compelling story - which results in the game feeling like a pointless, albeit challenging, strategic challenge.
Laser Squad runs well under Virtual PC - but it is very fast so you will probably want to use a slow down program on it.
Cheers,
Ben