The system requirements are a P2-266mhz or faster, 64 meg RAM minimum (128 megs preferred), and a Direct-X 7-compatible video and sound card.
Yes, Fallout Tactics does have a multiplayer mode. There are four multiplayer game types available for Tactics, which include Skirmish, Assault, Capture the Flag, and Scavengers. Skirmish is similiar to a last man standing match; basically the last player standing wins. Assault is most like other single player missions in Tactics, where one team of players has to complete a set of objectives, while another team tries to stop them. Capture the Flag is pretty self- explanatory; you have to capture your enemies flag. Lastly, in scavengers, you must attempt to grab the largest amount of loot in the time allotted, while preventing opponents from doing the same.
One of the nice features about Tactics is that it basically supports both modes of gameplay, and allows the player to decide which to use. The real-time mode of Tactics is called Continious Turn-Based. Basically, it is a hybrid between turn-based and real-time. CTB allows players to move around at any time, but actions like firing a gun cost characters action points. Action points then regenerate over time.
Tactics will be enhanced by most major hardware accelerator cards that support DirectX 7. However, Tactics is a 2D sprite based game.
Yes, patches for Tactics are available on the Fallout Tactics downloads page on this site.
This problem is known about and has been addressed by Interplay. The good news is that Interplay did release a patch to correct this problem. The bad news is that the patch is 75.6MBs in size. Just the same, you can download the patch from the Fallout Tactics download page of this site.
Yes, a demo is available and can be downloaded from Fallout Tactics download page of this site.