What Is RNG In Gaming? The Comprehensive Guide (2021)


In the gaming industry, RNG (stands for random number generator) is an integral part of the gameplay of many types of games like card games and modern puzzle games as well as multiplayer games. RNG is great for keeping games unpredictable and fresh.

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Many videogames make use of this to generate ranges of results for actions and calculations. These numbers are used randomly and can give players a chance at obtaining rare or powerful items, but can also lead to outcomes that leave them empty-handed.

In this article, MedCPU will explore What is RNG in Gaming? and Gaming examples that use RNG. Let’s get started!

What is RNG?

Random number generators (RNGs) is an algorithm that produces random numbers. These random numbers are used in video games to determine random events, such as your chances of landing a critical hit or grabbing a rare item.

Many modern puzzle games have random number generation (or RNG). These are the reasons why you meet unique Pokemon, and Mario Kart items change each time you grab them.

They also explain why you can find random treasures in Diablo. Some procedurally-generated games, like The Binding of Issac or Minecraft, wouldn’t even be possible without RNG.

What is RNG

Random Number Generator is not required for every game. A great example is rhythm games like Guitar Hero and Dance Dance Revolution. Rocket League and Mortal Kombat, two competitive multiplayer games, are almost devoid of randomness.

However, this doesn’t mean that random number generators are not used in competitive games. Counter-Strike Global Offensive uses RNG for how bullets hit targets. DOTA 2 uses RNG for how often opponents will be affected by abilities. The gameplay is unpredictable because of the element of randomness.

What is RNG in Games?

Random Number Generator is a key component of gaming. It allows us to reach random values and progress in the game. This term is well-known among video games enthusiasts. The RNG software runs on the engine of a video game.

In this instance, the RNG software is used to calculate the stats of you and your opponent after an encounter or generate a plausible but random event in the game’s world. The RNG in gaming is the value of your actions towards another player or NPC character.

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What's RNG in Gaming

Random Number Generator, for example, is used to determine what damage has been done to another character in games. RNG is used as it would be too costly and challenging to make every shot in real-time.

Another example is the many games that have random encounters. Because of limitations in memory, they can’t be programmed. It’s therefore much simpler to create an RNG system and make encounters when needed.

However, online gaming’s most prominent system that uses RNGs and is most familiar to most is loot. Modern online video games reward players with an RNG system.

This allows them to choose from a variety of rewards and gives them a specific item. The RNG system integrated into the game determines the item. This helps keep the in-game interactions more exciting.

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True RNG and Pseudo-RNG

To generate random numbers with a computer, you need a physical device called a hardware random number generator. To generate random numbers, this uses exact physical processes such as electronic noise.

These imperceptible events are impossible to predict and, therefore, cannot be predicted or predicted. They are as random as can be. This RNG is essential in security-centric systems, and it’s why common encryption uses it. It would be a huge problem if someone could figure out how the system generated random numbers for encryption protocols.

Gaming RNG doesn’t have this problem. Many programs, including those used in games, use pseudorandom number generation to increase speed and ease of reproduction.

PseudoRNG uses an algorithm (think about it as a formula) to perform mathematical operations on a starting value to generate a random number. It is essential to have a seed as random as possible to get different outputs every time.

Gaming examples that use RNG

Let’s now get to the basics of RNG. We will look at some RNG-related games to show how it works.

Loot RNG

RNG plays an essential role in loot-focused games such as Diablo, Borderlands, and Destiny. When you open a treasure box or defeat an enemy, the reward you get is different for every case. It is determined randomly by the game, so it is possible to get super-rare items right away or low-level armor repeatedly.

Loot drops are not completely random to ensure that the game is balanced. They have mechanisms in place to stop you from getting the best weapon from the first treasure box you open. This can be done in different ways, depending on the game.

Video games are addictive because of their ability to give you more.

Determining Chance Percentages with RNG

Random Number Generator is used in many games to calculate the probability of an event occurring. This is common in role-playing games (RPGs).

You may be able to trigger critical hits that do extra damage when you attack in JRPGs such as Persona 5 and Chrono Trigger. Although this happens randomly, you can increase your chances by using certain items in some games. RNG is what determines the frequency of battles with wild Pokemon and the creatures that you encounter.

Similar examples can be found in Super Smash Bros. Mr. Game & Watch’s character has a move called Judge, which displays a number between one and nine when it is used. You can only get the same value twice by using RNG.

Procedural Generation through RNG

RNG is the heart of procedural generation, which is a very popular trend in gaming. Procedural generation is the creation of game content using an algorithm rather than crafting it manually.

Spelunky and Minecraft are two well-known games that use procedural generation. These games create unique worlds using a seed value. This means that every player has a unique gaming experience every time they play the game.

Game developers also add restrictions to ensure that worlds don’t get created randomly, just like other forms of RNG. Minecraft doesn’t have random floating ground blocks that hover above the ocean.

RNG in Speedrunning

You might have heard of the video game RNG when you were speedrunning. Speedrunners strive to finish a game in the fastest time possible, so they practice to get to know the game. RNG, therefore, adds an element to speed runs that is unpredictable.

RNG can sometimes cause problems, but it isn’t always a problem in speed runs. It can be more enjoyable to have some variation between runs, as it makes it easier to improve your time with a bit of luck.

Minor to Moderate Speedrun NG

Sometimes RNG can be a minor factor in a run. Your total time won’t be affected by the exact location of enemies in a room or whether you receive a critical hit during a regular battle.

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The RNG may also cause significant slowdowns in other situations. In Super Mario Sunshine, King Boo is defeated by a boss. To win, you must spin a slot machine that has five outcomes. To destroy him, you first need to match three pineapple icons to produce a variety of fruit.

To set his tongue on fire, throw pepper at him, then hit him with other fruits. Good RNG will ensure that the peppers appear conveniently so that you can quickly finish the fight. Poor luck will mean that you may need to spin the roulette multiple times and lose some time.

Run-Breaking RNG

Run-Breaking RNG (1)

Unlucky RNG results can cause a game to be canceled. Banjo-Kazooie is an example of this.

You will be asked questions about your adventures in Grunty’s Furnace Fun at the end of the game. You will be asked questions about Gruntilda, the game’s antagonist. These questions can be answered if you speak to Brentilda, her sister.

These questions can be answered in a variety of ways, so the answers are not always consistent. Speedrunners don’t want to spend too much time with Brentilda, so they must guess the answers. It all comes down to luck – if they choose the wrong answer too often, they might die and lose a lot of time.

At the end of the speedrun, this RNG-dependent section is frustrating because the runner has no choice but to hope that they are lucky. Speedrunners are not immune to these roadblocks. As the video below illustrates, they often find ways around them.


What Is an RNG Seed Number?

A random number generator (RNG) seed number is the initial number used in the RNG algorithm. When generating numbers randomly, this seed ensures that the numbers are consistent and in no particular order.

An RNG seed number is an initial number used in the RNG algorithm. This seed ensures that the numbers are consistent and in no particular order.

What is RNG logic?

Random number generation (RNG), is a process that generates a sequence or symbols using a device. This cannot be predicted better than by chance.

What is Apex RNG?

RNG is a random number generation. This system is commonly used in battle royale gaming to randomly adjust in-game elements such as loot drops and quality.

What are some common ways to generate a Random Number?

Random Number Generators are a type of algorithm that generates a sequence of numbers, seemingly at random. random number generators are used in everything from lottery numbers to dices rolls.

There are a few common ways that a Random Number Generator can be generated. One of the most common ways is a mathematical formula that is used to generate a series of pseudo-random numbers.

What is the difference between RTP and RNG for Casino Games?

RTP (return-to-player percentage) is a term that you will often see when searching for information on RNG. RNG and RTP both indicate the fairness of a particular game.

However, they are vastly different. RTPs indicates how much of the initial stake is returned by players. In an ideal world, all games would have a 100% RTP. However, this is not true in practice. Respectable slots games have an RTP of between 90% and 96%.


RNG can be a good thing. Is it necessary for every Minecraft world to be identical? Or should all Diablo items be identical each time you play? RNG allows for variety and keeps the game fresh.

Many competitive gamers believe that RNG undermines skill. This can be a frustrating complaint, but it is only because some competitive games like Smash Bros have a double-life: they are casual party games requiring RNG to remain entertaining. This is why the esports community may emphasize skill-based mechanics in games.

That’s all you need to know about random number generators! Hopefully, now you understand all that randomness that is used in video games, and how to use them to your advantage. What do you think? If you have any more questions, comments, or concerns please feel free to comment below.

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Category: Gaming

Debora Berti

Università degli Studi di Firenze, IT
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