well some improvements over the 1st one. However many of hte hard levels can just be overcome with a swarm of knights. that's dumb. Also having to pay to get deeper into the game is farcical since really the game isn't worth it, partly due to the previous problem. Paying for upgrades. Well I guess they have to make some money...
Overall the game was okay. The idea and unit development system was pretty good andthe money system was also pretty good. The problems with the game was in it's length and "shallowness". As others have pointed out it is a touch easy and short. Additionally it could use a interactive progression map where you could chose the zones to attack. some system to develop units and more units and wall options would make this a great game.
This is quite fun, Learning how an abacus works may not be exactly a 'entertainment' style game but as 'educational' games go this has gotta be one of the best. :)
I very much enjoyed playing this game. The concept is nice, the puzzles are pretty challenging. I felt that the only thing that let it down (And it does sorta reduce teh enjoyment quite alot) is hte control system. it feels clunky and unresponsive. Ofter I found blocks only moving half the way I thought I had told them to.