This is the million-dollar question. Because Crab Game runs on peer-to-peer (P2P) connections rather than dedicated servers for many game modes, the risk of a VAC (Valve Anti-Cheat) ban is non-existent—Valve does not police Crab Game .
The mod menu generally includes a variety of tools that alter gameplay mechanics and visual settings: Crab Game Mod Menu v2.11
Other users may report accounts that appear to have an unfair advantage. This is the million-dollar question
Modding frameworks like allow players to re-introduce removed content or add new modes to the game creation menu: regardless of intent
The community surrounding Crab Game is split. Purists argue that any mod menu, regardless of intent, ruins the chaotic randomness that makes the game fun. On the other hand, many players use for private lobbies only—to create game modes like "Speed Crab," where everyone uses 2x speed, or "Hide and Seek," where the seeker uses ESP.