Battle for Wesnoth War on Eustrath Rimelands: Hammer of Thor ZX Spectrum Elite Collection - Jullian Gollop pack (Rebelstar, Lazer Squad, Chaos, Lords of Chaos!) (These could be hacked into Spectaculator as well...)
Viking lords is awesome ,tacwarrior is also a blast..great little war game as mentioned. forgot about hunters. and danger alliance(lost company) when it comes out
There's one massive "What should I buy" thread specially for this type of question. Check it out: http://forums.toucharcade.com/showthread.php?threadid=23990