Yes, it's got a skirmish mode, and the original version (I don't know about the PSN version) also had multi-system link play (Basically, a 2 player LAN game). There's only 15 maps for those 2 modes, however.
The controls will seem like a struggle if you're used to the PC version, however. With practice, however, you'll master the game easily enough.
The biggest drawback is that you're on a fixed course through the missions, rather than having a choice out of 2 or 3 different areas to battle in for the next mission.
Where logic won't work - I will Pal Gamers unite - http://www.gamefaqs.com/boards/gentopic.php?board=277