Rampart on Wii will also support a two-player mode. In two player, the map is set so that there are two 'islands' where the players have their own sets of castles. The gameplay plays the same as single player, except they must destroy each others' walls and can destroy the cannons of their opponents (unlike SP, where cannons cannot be destroyed). A winner is declared when either a player does not have a castle after build period, or a player captures all castles on their side.
Rampart uses libwiisprite and Sndlib. The game supports use of nunchuck and classic controller for movement, if you prefer to play it more classic-ly.
Feb 09: Rotating blocks are completely finished. As of now the Wiimote has to be angled in the direction you want to place the block (the outline correctly shows how it will be placed). If anyone has more creative angle solutions let me know. Started making it a bit more managed; you can now pick a castle and it'll build walls around it. I have yet to figure out how to do some of the neat effects like walls that you visually see building bit by bit around the home castle due to the way I wrote my wall building system.. The next part is figuring out how to make castles "owned", as to check territory I do a recursive check through all grass/water, and any tiles not marked are assumed to be territory.
Feb 08: It's been in development for a week or so now. A working menu has been created and the basis of the in-game gameplay is ready. You're able to build territory marked as black with differently shaped walls (all same shapes as Rampart). A particle system has been developed for explosions and the like.
Programming - Paril
Design Aid, graphical work, support - Chris (of Bananatech)
Graphical work - Tim
Graphical work - Hayes
Letting me borrow his Wiimote - Dustin
I have a lot of development questions for libwiisprite and the like, I will post them in the Discussion section, anyone who has answers I would be grateful if you answered 'em :)