Events are where Slay the Spire 2 runs are quietly decided. Not the boss at the end of the act. The room in the middle, where you traded 11 HP for a card removal. Either that set up the rest of the run, or it walked you into an elite at half health.
This is the full map of what is on offer, and which trades are worth taking.
How events work
Events appear randomly on the map as non-combat rooms. Most belong to a chapter, so the pool changes as you climb:
| Chapter | When | Flavour |
|---|---|---|
| Shared | Anywhere | Universal trades: gold, HP, relics |
| Overgrowth | Act 1a | Deck transformation, Max HP, healing |
| Underdocks | Act 1b | Gold, relics, light-and-dark trades |
| Hive | Act 2 | The highest-value trades in the game |
| Glory | Act 3 | Late-game payoff events (still expanding in Early Access) |
Each event offers two to four choices with different outcomes. A few only appear once per run, and some are straight upgrades with no downside.
The decision rule
Before the list, the principle that covers most of them:
Card removal and Max HP beat gold and potions. Gold buys one thing now. Removal makes every draw better for the rest of the run, and Max HP is a permanent buffer against the act boss. An event that removes a card for 11 HP is usually correct, especially in Act 1 when your deck is still full of starters.
The events worth knowing
Card removal events
| Event | The trade | Verdict |
|---|---|---|
| Dense Vegetation | Remove a card, lose 11 HP | Take it early, skip if you are low |
| Zen Weaver | 125 gold removes 1 card, 250 removes 2 | The best gold sink in the game |
| Doors of Light and Dark | Light upgrades 2, Dark removes 1 | Dark is usually stronger |
| Wellspring | Potion, or remove a card and add a curse | Situational |
| Field of Man-Sized Holes | Remove 2 cards, add Normality | Normality is a real cost |
Zen Weaver is the event that decides runs. If you see it with 125 gold, remove a Strike.
Max HP events
| Event | The trade |
|---|---|
| Byrdonis Nest | 7 Max HP, or a card that pays off later |
| Morphic Grove | Lose 100 gold to transform 2 cards, or gain 5 Max HP |
| Stone of All Time | Lose a Flex potion for 10 Max HP |
| Abyssal Baths | 2 Max HP and take damage, or heal 10 |
Max HP compounds through the rest of the run and into the next act. Take it when your HP bar is healthy enough to arrive.
Relic and gold events
| Event | The trade |
|---|---|
| Sunken Treasury | 63 gold, or 306 gold and a curse |
| Jungle Maze | 140 gold and lose 18 HP, or 42 gold safe |
| Welcome to Wongo’s | 100 for a common relic, 200 for an egg, 300 for three relics after 5 fights |
| Colossal Flower | Gold now, or HP for a stronger pull |
| The Sunken Statue | A sword relic, or gold for a small HP cost |
The cursed-gold events are traps more often than they look. 306 gold with a curse attached is a worse trade than it appears if the curse sits in your deck for twenty fights.
Deck transformation events
| Event | The trade |
|---|---|
| Aroma of Chaos | Transform a card, or upgrade one |
| Wood Carvings | Turn a starter into Peck, Slither, or Toric Toughness |
| Sapphire Seed | Heal and upgrade, or enchant with Sown |
| Tablet of Truth | Max HP and upgrade, or heal |
Transforming a Strike into something is close to removal; upgrading one is not. Take the transformation.
The three event mistakes
- Taking gold over removal. Gold is a one-time number; removal is permanent.
- Ignoring the HP cost at low health. The act boss is coming, and an event that drops you to 30% is a run-ending trap disguised as a reward.
- Skipping flavour text. Almost every event tells you exactly what the risky option costs. The ones that do not are the ones to be careful with.
A quick checklist
- Removal and Max HP first, always.
- Read the cost before the reward.
- Cursed gold is a debt, not a windfall.
- Transform beats upgrade when the target is a Strike.
For how events fit the run economy, see the beginner guide. For the relics those events hand out, see the relics database and relic tier list. For the enchantments several events apply, see enchantments.