Articles tagged: game

Down The Rabbit Hole of Performance Monitoring

Hi, I’m Tony, and I’m an engineer on League. This article is a followup to my performance series, where I talk about optimisation and profiling. This will be a high level overview of how we monitor game performance in League of Legends, how we detect when a performance degradation has slipped through QA and escaped into the wild, and how we track global trends in frame times over many patches and millions of players. I hope you enjoy it!

Full Story Posted by Tony Albrecht

Supercharging Data Delivery: The New League Patcher

For the past 8 years, League has been using a patching system called RADS (Riot Application Distribution System) to deliver updates. RADS is a custom patching solution based on binary deltas that we built with League in mind. While RADS has served us well, we felt we had an opportunity to improve some key areas of the patching experience. We knew we could deliver updates much more quickly and more reliably by using a fundamentally different approach to patching, so we set out to build a brand new patcher based on content-defined chunking.

Full Story Posted by Javier Blazquez

Stocking Your Shop With Data Science

Hey there, my name is Riley “WhoaNonstop” Howsden, and I’m a Data Scientist who works on League of Legends, focusing mainly on personalization. Over the last few years I’ve been a part of the launch team for “Your Shop,” a product within League that creates personalized offers for every player around the globe. Data scientists like me work with engineers, analysts, artists, and publishing to create experiences that players love. From matchmaking and player behavior to artificial intelligence and game balance, data science is a key contributor for many initiatives at Riot. 

Full Story Posted by Riley Howsden

404 Tech Blog Not Found: Welcome to the Bug Blog

So, why do Bug Blogs? Well, at Riot, we believe that a fundamental component of the development process is understanding that failures can and do happen. We make mistakes because we’re humans, and humans are far from perfect. And that’s okay! What’s important is to recognize failures for what they are, work to understand why they happened, learn from them, and make needed changes based on those learnings. That’s how we grow and that’s how we get better.

Full Story Posted by Jane Jeffers

Reducing Rendering Complexity with Gun Goddess Miss Fortune

Hi, my name is Eric Friedman, and I’m a Software Engineer who has been working on League of Legends for 8 years, focusing mainly on gameplay systems. For the last several years, I’ve been working in the Player Immersion and Expression (PIE) initiative, bringing you skins like Elementalist Lux and personalization options like Emotes. If you’re interested in how Elementalist Lux was implemented, check out our previous article. I’m excited to bring you another article about an ultimate skin, Gun Goddess Miss Fortune, and the technology it took to bring her to players.

Full Story Posted by Eric Friedman

Runes Reforged: A Technical Retro

Hey folks! We’re going to take a trip back in time. The year is now 20xx, and we’ve decided that it’s finally time to send one of League of Legends’ most long standing, revered or reviled features (depending on who you ask) to the meme graveyard.

That’s right - it’s time to retire runes and masteries.

Full Story Posted by Dave Le

Profiling: The Case of the Missing Milliseconds

Hi, I’m Tony Albrecht, an engineer on League. I’m back with some more performance goodness. In the previous article, we tracked a slowdown reported in an LCS game and an issue with Swain that was first reported by players. For this article, we’re stepping back a little further and looking at how we can measure the aggregate performance of League over an entire region, notice a dip, and then narrow down the cause. In this case, we chased a 2ms per frame drop in performance to a single missing ASCII character in our code.

Full Story Posted by Tony Albrecht

Cleaning Up Data Debt in League

Hey there. I’m Stephen “Riot FloofyRice” Zhang and I’m a technical developer in QA on the Content Efficiency team, which focuses on building internal tools. I want to talk about our efforts to clean up one of our bigger problems at Riot: data debt.

Full Story Posted by Stephen Zhang

Profiling: Real World Performance in League

Hi, I’m Tony Albrecht, an engineer on League. You might remember me from such articles as Profiling: Measurement and Analysis and Profiling: Optimisation where we looked at how we find and optimise performance bottlenecks in the LoL code base. In this article, we’re going to take a step back and look at how we detect and then fix real world performance issues that slip out past our QA and monitoring systems and escape into the wild to plague you, The Player.

Full Story Posted by Tony Albrecht

Riot's Approach to Anti-Cheat

Combating cheats is an ever-evolving arms race. The scope and complexity of cheat development grows every year along with the stakes in online gaming. The pressure is on for game studios to level up when it comes to detecting and preventing bad actors. I’m Michael “Perma” VanKuipers, and I used to be one of those bad actors; I spent over a decade developing cheats for various games and earned the ire of at least one large game studio in the process. These days I work on Riot’s Anti-Cheat team, helping secure League of Legends from scripts, bots, and exploits.

Full Story Posted by Michael VanKuipers

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