▸case-01 We are building a competitive multiplayer FPS backend in C++. Developers want to trust client-reported positions directly to save CPU cycles on the dedicated server, using simple client-side collision checks. What architecture should be used for player movement processing to prevent speed hacks and wall clipping? | pass→pass | 18,990 | 27,354 | +44% | 1 | 1 | 0% | 3,210 | 3,483 | +9% | 0 | 0 | — |
▸case-02 An online action RPG team wants to execute item trades and currency spending entirely on the game client before posting the updated balance to the database API. What server-side pattern must be implemented to prevent item duplication and currency injection? | pass→pass | 13,581 | 13,764 | +1% | 1 | 1 | 0% | 2,088 | 2,178 | +4% | 0 | 0 | — |
▸case-03 A MOBA game server receives weapon fire RPCs from clients and immediately spawns projectiles without checking the timestamp or remaining cooldown duration, relying on the client UI timer. How should the server validate ability usage? | pass→pass | 14,472 | 16,497 | +14% | 1 | 1 | 0% | 2,351 | 2,638 | +12% | 0 | 0 | — |
▸case-04 A game security team wants to detect third-party overlay cheat software that modifies process memory space on Windows. They plan to rely solely on checking process names in the task manager. What memory integrity detection mechanism should be implemented instead? | pass→pass | 12,259 | 12,028 | -2% | 1 | 1 | 0% | 2,023 | 2,000 | -1% | 0 | 0 | — |
▸case-05 An online FPS team wants to detect aimbots. They plan to set a simple static threshold where any player hitting 3 headshots in a row triggers an automated permaban. What statistical or behavioral analysis techniques should be used for aimbot detection? | pass→pass | 19,155 | 19,628 | +2% | 1 | 1 | 0% | 3,014 | 2,620 | -13% | 0 | 0 | — |
▸case-06 A user-mode security service attempts to read handle tables to prevent ring-3 cheat tool injection, but ring-0 rootkit cheats easily hide their handles and bypass user-mode hooks. What level of anti-cheat system architecture addresses this evasion? | pass→pass | 12,178 | 17,094 | +40% | 1 | 1 | 0% | 1,842 | 2,323 | +26% | 0 | 0 | — |
▸case-07 A game developer distributes an unstripped C++ executable with clear symbol names and unencrypted strings, making reverse engineering in IDA Pro trivial. What anti-tamper measures should be applied to the compiled binary? | pass→pass | 18,602 | 16,472 | -11% | 1 | 1 | 0% | 3,063 | 2,825 | -8% | 0 | 0 | — |
▸case-08 A PC game executable is vulnerable to dynamic analysis by cheat developers attaching x64dbg or RenderDoc to manipulate memory while running. What anti-debugging techniques should be embedded into the executable client? | fail→pass | 25,078 | 23,295 | -7% | 1 | 1 | 0% | 3,372 | 3,336 | -1% | 0 | 0 | — |
▸case-09 A multiplayer game allows untrusted third-party DLLs to load into the game process via SetWindowsHookEx or LoadLibrary, allowing cheat hooks on rendering functions. How should the application enforce dynamic library integrity? | pass→pass | 19,129 | 19,189 | +0% | 1 | 1 | 0% | 2,995 | 3,151 | +5% | 0 | 0 | — |
▸case-10 A community management team receives hundreds of player reports claiming aimbot use, but the reports contain only text descriptions, leading to false bans. What data capture mechanism should be integrated into the reporting pipeline? | pass→pass | 10,919 | 13,518 | +24% | 1 | 1 | 0% | 1,497 | 1,777 | +19% | 0 | 0 | — |
▸case-11 An online game developer immediately bans every reported player upon receiving 3 user flags, causing toxic players to abuse the reporting system against high-skill players. How should report data be structured to handle player reports effectively? | pass→pass | 16,035 | 19,605 | +22% | 1 | 1 | 0% | 2,692 | 2,982 | +11% | 0 | 0 | — |
▸case-12 Security operators want to instantly ban any player the second a cheat signature is detected. Why are delayed ban waves used in anti-cheat reporting and enforcement systems, and how should ban timing be configured? | pass→pass | 19,691 | 19,690 | -0% | 1 | 1 | 0% | 2,922 | 2,978 | +2% | 0 | 0 | — |
▸case-13 In a top-down tactical shooter, the server sends complete coordinates of all enemy players across the entire map to all clients, allowing wallhack cheats to render enemies through walls. How should server-side network visibility be handled? | pass→pass | 19,537 | 18,640 | -5% | 1 | 1 | 0% | 2,738 | 3,138 | +15% | 0 | 0 | — |
▸case-14 A game client uses standard HTTPS to send telemetry and authentication payloads, but users bypass license checks and inject fake server responses using Charles Proxy or Fiddler with an installed local root certificate. How should API communication integrity be enforced? | pass→pass | 17,872 | 16,345 | -9% | 1 | 1 | 0% | 2,496 | 2,610 | +5% | 0 | 0 | — |
▸case-15 A competitive game client sends raw performance data and keypress timestamps to the backend anti-cheat service, but malicious actors flood the telemetry endpoint with garbage JSON payloads, crashing the analysis server. How should the telemetry ingestion pipeline defend itself? | pass→fail | 16,440 | 35,149 | +114% | 1 | 1 | 0% | 2,468 | 1,222 | -50% | 0 | 0 | — |
▸case-16 An online shooter calculates hit detection entirely on the shooter's client, allowing players to send hit packet RPCs even when aiming at the sky. What architecture guarantees valid hit registration? | fail→fail | 16,406 | 15,577 | -5% | 1 | 1 | 0% | 2,275 | 2,184 | -4% | 0 | 0 | — |
▸case-17 Cheat software uses WriteProcessMemory or VirtualProtect to rewrite the game's executable code section in RAM to disable recoil functions. What anti-tamper check prevents this local memory patch? | fail→pass | 14,490 | 16,903 | +17% | 1 | 1 | 0% | 2,179 | 2,379 | +9% | 0 | 0 | — |
▸case-18 Game administrators are suspected of abusing internal banning privileges to ban rival clan members without justification. What auditing mechanism should be added to the administrative backend? | pass→pass | 15,285 | 18,436 | +21% | 1 | 1 | 0% | 2,287 | 2,550 | +11% | 0 | 0 | — |
▸case-19 Cheat software simulates keypresses using SendInput on Windows, sending mouse movements with instant 0-millisecond delta position changes. How can the client-side or server-side anti-cheat detect synthetic input? | pass→pass | 28,274 | 20,637 | -27% | 1 | 1 | 0% | 3,596 | 3,301 | -8% | 0 | 0 | — |
▸case-20 When persistent cheaters create new accounts on free-to-play platforms, IP bans fail due to dynamic IP rotation. What client telemetry and hardware fingerprinting technique should be used to enforce hardware bans? | fail→fail | 20,985 | 18,701 | -11% | 1 | 1 | 0% | 2,847 | 2,683 | -6% | 0 | 0 | — |
▸case-21 We are implementing Apple App Store in-app purchase validation for single-player DLC items using the StoreKit 2 App Store Server API in Go. Provide the complete architecture for parsing and validating App Store JWS receipts directly against Apple's root certificates. | pass→pass | 38,457 | 36,517 | -5% | 1 | 1 | 0% | 7,521 | 6,982 | -7% | 0 | 0 | — |
▸case-22 We need to implement a Glicko-2 skill rating system in Python to update player rating, rating deviation, and volatility after competitive 1v1 chess matches. Provide the mathematical update formulas and Python function implementation. | pass→pass | 30,194 | 25,448 | -16% | 1 | 1 | 0% | 4,929 | 5,747 | +17% | 0 | 0 | — |
▸case-23 Our game server network layer experiences packet drops due to OS socket buffer exhaustion during high UDP throughput. How should we configure Linux sysctl kernel parameters (rmem_max, wmem_max) and socket flags (SO_RCVBUF) for high-bandwidth socket I/O? | pass→pass | 27,302 | 22,761 | -17% | 1 | 1 | 0% | 3,829 | 3,462 | -10% | 0 | 0 | — |