tycoon-like game, and play others online

well, im looking for a tycoon like game engine but cant. i cant find any tycoon like game engine. so can unity create a tycoon like game? my game is simple, its something like farm tycoon. but in 2d. can i use unity to do this game?

second, as you can see those games like M.A.T or C.S.O or dota, or TANK, those games can play with other player online. but how to do that in ipad?

Yes. its possible in unity3d. since from now you can export your game to PC or Android in free version. but i considered using pro version.