Devs who open source their games, why?

• shapez.io

  87 6,157 0.0 JavaScript

  shapez is an open source base building game on Steam inspired by factorio!

  

For example, the ones I'm most aware of are Mindustry and shapez.io.

• Mindustry

  272 20,969 9.9 Java

  The automation tower defense RTS

For example, the ones I'm most aware of are Mindustry and shapez.io.

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• ILSpy

  42 20,157 9.2 C#

  .NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!

  

ILSpy for example can extract all of the C# source code for a Unity game in almost exactly the same form as it was originally.

• SNKRX

  21 1,199 0.0 Lua

  A replayable arcade shooter where you control a snake of heroes.

I'm the developer of SNKRX and on top of what most other people mentioned, the truth of the matter is that making games is hard and making games while working on someone else's codebase is even harder. Anyone who has the capacity to do anything useful with your game's codebase will likely also have the capacity to make their own game from scratch, so they'll just do that instead.

• pixel-dungeon-gradle

  4 79 2.2 Java

  A version of the Pixel Dungeon source code using the gradle build system

Shovelware companies for sure do this. But I mean it's nothing you would have heard of, just crappy app store games or sketchy download sites. There's a lot of very cheap games built off of the Pixel Dungeon source code: https://github.com/00-Evan/pixel-dungeon-gradle

• aseprite

  329 26,401 9.7 C++

  Animated sprite editor & pixel art tool (Windows, macOS, Linux)

  

Go try to sell a copy of aseprite to someone. Just try. It’s open source with a price tag. If it’s so easy, prove me wrong and sell a copy of it to someone.

• skia-binaries

  1 25 0.0

  Prebuilt binaries generated with GitHub Actions that are downloaded by skia-binding's build.rs script.

  

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• VVVVVV

  28 6,816 9.7 ActionScript

  The source code to VVVVVV! http://thelettervsixtim.es/

Also VVVVVV wasn't actually open sourced. It's source available. In particular, per its license, it explicitly forbids selling copies:

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