I over-scoped and made a game that was too complicated, but here it is anyway.

Description

The game is a turn based strategy game that consists of four levels. Spirits

can inhabit trees. You control the red, green and white spirits while the

computer controls the yellow spirits. Your spirits will attack the computer's

and vice versia. Once a spirit loses enough health it will die. You may spawn

(summon) your own spirits into uninhabited trees.

Spawning spirits and going to the next level costs mana. Having white spirits

in elder trees (i.e. the bigger ones with a white outline) will give you mana.

Additionally, darkness expands over time and will hurt your spirits.

Controls

To spawn a spirit click a spirit in the HUD and then click a tree to place it.

The buttons A (archer) selects the red spirit, M (mage) selects the green

spirit and E (elder) selects the white spirit.

To go onto the next turn press the TURN button or press Z.

To go onto the next level press the LEVEL button.

ESC pauses the game and allows you to go back to the main menu.

Use the arrow keys to scroll. Use + and - to zoom.

Abilities & Costs

Red spirits attack more frequently and at only one enemy at a time. They cost

5 mana.

Green spirits attack less frequently and at multiple enemies at a time. They

cost 10 mana.

White spirits do not attack, but gain mana when placed in elder trees. They cost

30 mana.

Moving onto the next level will require you to have all 300 of your mana.