If you ever played to iubes:1
iubes:2 is the same game, except that everything changed.
A new engine has been written. Faster, brighter, finer, with a new interface way much handy thanks to your feedbacks.
Your strategy can now evolve as you can destroy your own buildings. There is new resources, buildings and units, while the iubes themselves have been upgraded with better logic and reactions.
Some features have been discarded: no more night time, no cemetary, and a fixed time speed (x4) to let you focus on the true nature of the game.
But above all, the whole ranking system has been replaced by a complete map with strategic positions you'll have to pass through...
So, welcome back!