4 series

In a world remade into a brutal game, the one man handed no skills and a hidden timer discovers that starting from nothing is its own kind of cheat code.

Trapped in a dungeon that resets him every time he dies, a coder starts mapping the rules everyone else dies obeying, one lethal run at a time.

When reality ships weekly updates and monsters get buffed on Fridays, a low-level shopkeeper turns reading the fine print into humanity's deadliest build.

Reincarnated as the core of a lonely dungeon, a strategist turns traps, monsters and patience into the deadliest floor in the realm.