Idle Tree

It'd be nice if the appearance of the "hero" guy changed with each level. With games like this it's those tiny rewards that make them engaging.

I would love a "bestiary" with all the fighters you've unlocked.

All coin colors: Bronze (one, 1) > Silver (thousand, k) > Gold (million, m) > Platinum [cyan] (billion, b) > Ruby [red] (trillion, t) > Amethyst [purple] (quadrillion, q) > Emerald [green] (quintillion, qt) > Rose [pink] (sextillion, s), Sapphire [blue] (septillion, sp) > Diamond [white] (octillion, o) > Onyx [black] (nonillion, n) > Rainbow (decillion, dc) > Unobtainium [gold-green] (undecillion, u) > Bronze again?! (duodecillion, do) - Proof of second bronze: http://imgur.com/NnghhY9 (Jelnir should really make the next coin orichalcum, which is coppery-pink)

Oh shizzle.... just saw the other levels. So yeah.. there's stuff that happens when you idle. That just upped my rating for sure. But still, decimal point bug. Yeah.

Game needs stats. Times the tree has been hit. Money collected. Upgrades purchased. Money per second.

The Fighter's Bestiary is also a sweet idea. Maybe a Gallery of Kicked Trees.
Visual changes to the 'main character' when levelling up would be an easy one.

Nice timewaster. :)