Anthony (sublivion) has been building on Roblox since he was 10, and now — while studying computer science at university — he's a core developer on Croydon: London Bus Simulator, a niche transport sim that's attracted over 46 million visits. We explore how Roblox's discovery algorithm turns hyper-specific concepts into mainstream hits that outperform competitors on Steam, and why the platform's low barrier to entry makes it the perfect home for simulation games.

Episode 20

Sources:

- Croydon: London Bus Simulator on Roblox: https://www.roblox.com/games/8265622251/Croydon-London-Bus-Simulator

- 4K Texture Rendering (DevForum): https://devforum.roblox.com/t/studio-beta-4k-texture-rendering/4144950

- SLIM - Scalable Lightweight Interactive Models (DevForum): https://devforum.roblox.com/t/client-beta-introducing-scalable-lightweight-interactive-models-slim/4034709

- Server Authority (DevForum): https://devforum.roblox.com/t/studio-beta-build-fair-responsive-games-with-server-authority/4139157

- Roblox Incubator & Jumpstart Programs: https://about.roblox.com/newsroom/2026/03/roblox-announces-incubator-jumpstart-creator-programs

- Bus Simulator 21 - Steam Charts: https://steamcharts.com/app/976590

Hosts:

- Adam (BanTech): https://lastlevel.co.uk/adam

- Fedor (LoadingL0n3ly): https://x.com/LoadingL0n3ly

- Anthony (sublivion): https://www.roblox.com/users/44028290/profile

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Visit https://lastlevel.co.uk/podcast for more.

Join the Discord: https://discord.lastlevel.co.uk

Beyond The Blox is produced by Seb Jensen for Last Level Studios.

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Chapters:

(00:00) Intro

(00:54) Meet the Host: Anthony's Story

(05:06) Learning Physics and Math Through Game Dev

(13:07) The Journey to Transport Simulation

(22:35) Croydon: The Mainstream Niche Explained

(25:23) Organic Growth & the Roblox Algorithm

(30:39) Croydon's Realistic Design Choices

(32:52) The Tech Behind Croydon

(37:42) AI and NPCs in the Future of Simulation

(41:06) Could Croydon Work on Another Platform?

(44:07) Outro