Global Events
Every 5 minutes (an “epoch”), the game decides for all players at once whether an event starts. The chance is currently 7% per 5-minute window → about 20 events per 24 hours. Only one event can start per window, and every event hits all players worldwide at the same time.
Which event starts depends on its weight (total 100, so the weights double as percentages): the higher the weight, the more often it occurs. The numbers below are averages — on individual days you may see more or fewer.
All Events at a Glance
| Event | Duration | Effect | Weight | Avg. per day |
|---|---|---|---|---|
| Price Surge | 90 sec | BTC price briefly +18% | 17 | approx. 3.4 |
| Price Crash | 80 sec | BTC price briefly −22% | 12 | approx. 2.4 |
| Bull Run | 240 sec | BTC price +45%, difficulty ×1.1 | 7 | approx. 1.4 |
| Bear Market | 240 sec | BTC price −38%, difficulty ×0.95 | 6 | approx. 1.2 |
| Difficulty Up | 180 sec | Difficulty ×1.25 (less yield) | 11 | approx. 2.2 |
| Difficulty Down | 150 sec | Difficulty ×0.8 (more yield) | 11 | approx. 2.2 |
| Hardware Shortage | 200 sec | Shop prices ×1.35 | 9 | approx. 1.8 |
| Power Outage | 60 sec | about 60% of running miners shut down; failure risk ×2.2 | 2 | approx. 0.4 |
| Heatwave | 240 sec | Ambient temperature +12°C, failure risk ×1.6, power draw ×1.15 | 14 | approx. 2.8 |
| Cheap Power | 120 sec | Power costs ×0.7 | 11 | approx. 2.2 |
The Events in Detail
Market Events (Price & Difficulty)
- Price Surge — The BTC price jumps up 18% for a short time. A good moment to sell BTC.
- Price Crash — The BTC price drops 22% briefly. If you want to buy BTC, now is cheaper (maximum 3 BTC purchases per 24 hours).
- Bull Run — A longer rally: BTC +45%. Difficulty also rises slightly (×1.1), so your yield per TH/s dips a little.
- Bear Market — The price slides 38%, and difficulty drops slightly (×0.95). Not a great time to sell.
- Difficulty Up — The network gets harder, and you mine noticeably less BTC for the event’s duration (difficulty ×1.25).
- Difficulty Down — The opposite: difficulty falls to ×0.8 and your miners deliver more BTC.
Farm Events (Power, Temperature & Hardware)
- Hardware Shortage — For 200 seconds, miners in the shop and upgrades cost 35% more. Purchases can often wait a few minutes.
- Power Outage — The harshest event, but also the shortest: about 60% of your running miners drop out, and failure risk is 2.2× higher. You then have to restart affected miners manually. More in Miners.
- Heatwave — The environment gets 12°C warmer. Miners overheat faster, failure risk rises to ×1.6 and power draw to ×1.15. Good cooling pays off now — see Temperature & Wear.
- Cheap Power — Your power costs drop to 70% for 120 seconds. Great for overclocking phases.
Transition Phase
Events don’t hit at full strength right away. At the start and end of an event there’s a short transition phase in which the effect gradually builds up or fades out. Each transition phase equals 15% of the event’s duration.
Offline Events
Even when you’re not online, important events can happen on your farm. When you return, you’ll see the relevant events of the last 24 hours with their actual timestamps.
Duplicate notifications are avoided, and only events that directly affect your farm are shown. These include power outages, heatwaves, cheap electricity prices, and hardware shortages. Pure market movements aren’t shown as offline events — they remain visible in the price chart.
Community Events
On top of the random market events, the HashEmpire team can start time-limited community events. They apply to all players at the same time and grant a percentage bonus: a Hashrate Boost (more mining yield), Cheap Electricity (lower power costs), or a PvP Boost (more PvP points for successful attacks). While you are away, the bonus is credited proportionally for the time the event was running.
Seasonal Events
Around Halloween, Christmas and Easter there are special seasonal events with their own start and end dates. While one is running, every item in the Premium Shop is cheaper by a percentage (calculated in whole HashCoins, at least 1 HashCoin). Seasonal events have no effect on mining or your farm — they are all about the discount.