The terraforming can be a bit awkward and we are beyond the days of the Amiga, so perhaps something easier to control?
There's been a couple of games where you could click on an existing height of land and then click-drag the mouse to push other land to the same height.
It is rather easy, which is a shame. bait the enemy hero with a meteor, kill him at your base with the easy support then mass and invade. The spells kill enemy troops too well.
Stuck on level after different approaches. You have to buy security on day 8 as you start getting robbed from day 9. That sets you back, plus cleaning. The AI generates a lot more cash, enough to get delivery, 2nd restaurant AND its primary bigger than your own. If you try to buy a 2nd restaurant, the AI's is bigger and takes advantage of customers you can't supply.. or the AI buys both restaurants...
A desktop version is available on Desura which will be including ongoing updates and new Challenge islands! Glad you've been enjoying it :D