Grow your tree, making sure the leaves get enough sunlight.

There's a tutorial ingame, but just to sum up:

• There are 3 tiles that you can place: leaf, branch, and sunlight.
• Leaves can only be placed next to branches, and if they go 2 turns without being next to sunlight, they'll fall off the tree.
• Branches can only be placed next to other branches. You'll get one of these every winter.
• Sunlight can go anywhere, but you'll want to put it next to your leaves.

Combos:

• If there are 2 (or more) leaves next to a branch tile, one of them will turn into a new branch.
• If there are 2 (or more) sunlight tiles next to a leaf tile, you'll get an extra leaf to place next turn.

The game continues until you have no leaves left on your tree.

The balance is a bit rough, I'm not sure you can actually really lose without trying to.

[EDIT - I've noticed there's a few layout issues in the UI, I'll get a fix out for those later today.]

Anyway, let me know what you think!