Combo Spell

Oh yeah! It's time for COMBO SPELL!

Defend the Heart by building units from Elements and wiping out enemies before they reach it. If an enemy touches the Heart, it's game over!

The game runs in four phases, cycling forever:

1. Explore — Tap a gray fog cluster to reveal it. You'll uncover resource nodes (blue outline) and enemies (red outline). The icon peeking through the fog tells you which Element that cluster is rich in.
2. Expand — Tap an Element in the left-side column to pick it up, then tap an empty tile to place a new unit (green outline), or tap an existing unit to add the Element to it. Hit the Craft button to enter Crafting mode: tap one Element, then tap a different one to trade 2-for-1.
3. Exploit — Tap a resource node to harvest one Element from it into your wallet. The counter in the top-right shows how many harvests you have left this phase.
4. Exterminate — Tap one of your units to select it (yellow outline). Green tiles are where it can move; red tiles are enemies it can attack. Tap a highlighted tile to act/ Each unit gets one action — move OR attack. Defeated enemies drop all their Elements into your wallet and can't keep approaching the Heart, which they'll totally do when you hit Play and watch the enemies take their turn!

The current 4 Elements (more will come later) are:

1. Earth (black mountain range) — +1 max HP per stack (units always have at least 1 HP, so the first Earth used bumps a unit up to 2 max HP, the second to 3 max HP, etc.)
2. Metal (dark gray arrow) — +1 damage per stack (going from 0; units don't do damage by default, either to actively attack or counter-attack enemies that hit them, but adding Metal lets units do both!)
3. Wind (light gray curlicues) — +1 range for Metal or other Elements that will come later (units need range to actively attack, but not to counter-attack in melee!)
4. Wood (teal leaf) — +1 movement tiles per turn (going from 0; units are immobile towers without Wood)

Infinite combinations of Elements are at your disposal, just watch out for enemies who customize just like you can!