hehe nice drawings and music :D... but needs a little more pimping, like enegouth should be enough :D. That is much easier then adding new structures like objects and factions and should be dealt with 1st :D
zomg! MM4! I remember I was playing MM1... good times. For me, this game is a portal to my days of free time and maximal gaming :D Time to honour those days.
"A large health/Energy" should be "little/alot health/energy", since health and energy aren't singular objects and can't be proceeded by 'a'. Just like 'a water' is wrong too :D
Seems you've put alot of time in this, and it looks good and sounds fine :D Just patch the things said in comments. mmm Pinguins are gonna take the world one day.
I recognize some sounds from previous games. Keep up the good job! And keep your signature in making games (like the 'yo' when a tower = build is good way to)