Rock Paper Scissors game on Neo X demonstrates anti-MEV protection
Neo World Growth has launched a “Rock Paper Scissors” recreation on the Neo X sidechain that lets customers expertise Neo’s anti-MEV options firsthand. The sport is stay and playable at rps.ngd.community.
MEV refers back to the revenue that block producers and bots can seize by reordering, inserting, or front-running transactions inside a block, usually on the expense of normal customers. Entrance-running happens when a bot watches the mempool, the general public ready space the place pending transactions sit earlier than they’re confirmed, spots a worthwhile transfer, and rushes in a competing transaction with the next payment to seize the achieve first.
How the sport works
Gamers join a pockets by considered one of three choices: MetaMask, Neon Pockets, or WalletConnect. Contributors want no less than 0.1 $GAS on Neo X to cowl the required transactions.
The sport provides two modes, and the distinction between them is the lesson. Customary Mode advertises a 10x payout, whereas MEV-Protected Mode pays 2x.
The bigger Customary Mode reward is just not merely the higher deal. In Customary Mode, a participant’s transfer is submitted by the general public mempool, the place a front-running bot can observe it and duplicate it in time to assert the prize, so the headline payout is uncovered to seize.
In MEV-Protected Mode, the transfer stays hidden till the result’s finalized, stopping front-running and permitting the participant to maintain smaller however dependable winnings.
NGD encourages gamers to attempt each modes with a small quantity of $GAS to see the distinction for themselves, and the sport explains why every spherical was gained or misplaced and the way MEV factored into the result.
All $GAS that accumulates within the recreation, together with rewards gained by bots and rewards gained by the home, returns to the pool so gamers can hold testing. NGD has stated it is going to proceed replenishing the pool if vital.
The safety beneath
Neo X eliminates poisonous MEV on the protocol degree utilizing dBFT consensus and enveloped transactions. dBFT is the consensus mechanism Neo makes use of to finalize blocks. Enveloped transactions are stored encrypted and hidden till they’re finalized and ordered inside a block, so no validator, block producer, or MEV searcher can view or exploit a transaction upfront.
Within the recreation, because of this a participant’s transfer can’t be seen till the spherical is settled. As NGD frames it, “Nobody can peek, nobody can front-run. Win or lose, the sport is truthful.”
Neo X’s anti-MEV system went stay by the v0.4.2 improve in September 2025. The mechanism depends on distributed key era and threshold decryption, which requires a two-thirds quorum of consensus nodes to decrypt transactions solely after their ordering is finalized. The Rock Paper Scissors recreation demonstrates that already-shipped safety somewhat than a brand new piece of infrastructure.
The sport’s code is absolutely open supply, hosted in COZ’s GitHub repository.
The complete announcement might be discovered on the hyperlink beneath:
https://x.com/ngd_neo/standing/2066793344261365884
