RANDOMNESS & PROBABILITY
A hidden or visible safeguard that increases drop odds or guarantees an outcome after repeated failures, preventing genuinely catastrophic unlucky streaks from pure random rolls.
A random chance for an attack to deal amplified damage — the classic 5% chance for double.
Outcomes are resolved by dice, shown to the player (visible) or resolved behind the scenes (hidden), lending tabletop-style tension to actions and skill checks.
Weighted random tables that determine what the player meets — wandering monsters, road events, fishing pulls — rolled per region, time, or trigger.
In-world casino-style minigames — dice, cards, roulette, cockfighting — that let players wager currency for a chance at more, purely as a diegetic activity separate from the main progression.
Attacks succeed or fail on a visible probability roll — the interface says 85%, and the game rolls against it.
The structured randomness behind item drops: each enemy or container rolls against a weighted table defining what can drop and how often, usually stratified into tiers so better sources roll better tables.
Percentage chances for effects to trigger on actions — 15% chance to freeze on hit, on-kill explosion procs, critical effects with per-hit odds — 'proc' being the MMO-era term for programmed random occurrences.
Content — terrain, structures, items, quests — is created algorithmically rather than hand-authored, using rules and randomness to produce variation at a scale no team could hand-build.
Scripted or semi-scripted incidents fire during play — a distress call, a plague, a wandering merchant, a moral dilemma — injecting surprise and narrative texture into systemic games.
Explicit gambles offered to the player — the cursed chest, the elite fight guarding better loot, the double-or-nothing wager, the shortcut through the hard zone.
Random generation driven by a shareable seed value — the same seed producing the identical world, dungeon, or run every time, making randomness reproducible on demand.
Random outcomes with tuned probability distributions — loot tables where rarity tiers carry weights, drop chances biased by context, gacha rates published to the decimal, the dice that are loaded on purpose and often for the player's benefit.