How to Play

Step 1: Connect Your Wallet

Click the Connect Wallet button in the top-right corner of the header. LastHash supports:

Make sure your wallet is connected to the Base network. If you're on a different network, the app will prompt you to switch.

You need two things on Base:

USDC — for your wager (minimum $0.10, maximum $2,000)
ETH — a small amount for gas fees (typically < $0.01 per transaction on Base)

If you have USDC on Ethereum mainnet, you can bridge it to Base using the official Base Bridge or third-party bridges like Across or Stargate.

Once a game is in the Lobby phase (registration open):

Enter your wager amount — type a custom amount or use the quick-select buttons ($10, $50, $100, $500)
Approve USDC — if this is your first time, you'll need to approve the contract to spend your USDC (one-time per game)
Pick your position — click LONG if you think ETH price will go up, or SHORT if you think it will go down
Confirm the transaction in your wallet

Your wager is deposited into the game's smart contract vault. Once submitted, your position cannot be changed or cancelled for that round.

Each game has 3 elimination rounds (plus potential overtime):

The ETH/USD price is recorded at the start and end of the round
If ETH price goes up: SHORT predictors are eliminated, LONG predictors survive
If ETH price goes down: LONG predictors are eliminated, SHORT predictors survive
If ETH price is unchanged: no eliminations (rare)

Results are displayed
Eliminated players can choose to revive by paying a 10% fee (see Revival)
Surviving players can optionally change their prediction for Round 2, or let their current position carry forward

Same elimination logic as Round 1
Your Round 1 prediction carries forward automatically unless you changed it during the intermission

Got eliminated? You have one chance to get back in:

	Round 1 Revival	Round 2 Revival
When	During Intermission 1	During Intermission 2
Fee	10% of your original wager	30% of your original wager
Requirement	Must pick a new LONG/SHORT position	Must pick a new LONG/SHORT position
Limit	Once per game	Once per game

Example: You wagered $100 and got eliminated in Round 1. You can revive by paying $10 (10% fee) and selecting a new prediction for Round 2.

Revival fees are split: 50% goes to the prize pool (benefiting all survivors), and 50% goes to the platform.

There is no revival after Round 3. If you're eliminated in the final round, the game is over for you.

If more than 89% of players survive Round 3, the game enters Overtime — sudden-death rounds to determine a winner.

Overtime rounds follow the same 5-minute format
No revival is available during overtime
Up to 5 overtime rounds can be played
The game ends when enough players are eliminated or all overtime rounds are completed

If you survive all rounds (including overtime, if triggered):

Your share of the prize pool is proportional to your wager:

Your Payout = Total Prize Pool x (Your Wager / Total Survivor Deposits)

A 10% platform fee is deducted from your gross payout. If you were referred by another player, 1% goes to your referrer and 9% to the platform.

Example:

If you don't submit a new prediction during an intermission, your previous round's prediction automatically carries forward. This means:

If you picked LONG in Round 1 and don't change it during Intermission 1, you're still LONG for Round 2
This chain continues: Round 1 → Round 2 → Round 3 → Overtime

You only need to actively vote if you want to switch your position.

Watch the price trend before the round ends — momentum can shift in the final minutes
Revival is strategic — sometimes it's better to accept elimination than pay a 30% fee in Round 2
Carry-forward predictions are automatic, but reconsider your position each intermission
Refer friends — earn 1% of their winnings through the referral program
Start small — try a $0.10 wager to learn the mechanics before committing larger amounts