esports-for-engineers VS VVVVVV

There's a python script that makes the organization more clear. Once you've installed the games package, run "./launcher.py" at the ubuntu command line to see a text menu "Top Level Menu" which launches the games.

This menu is shown on page 2 of the brochure here: https://github.com/sim-museum/esports-for-engineers/blob/mas...

According to the class syllabus, games include open source deep learning chess and go, as well as old open source sims such as Speed Dreams, Rowan's Mig Alley and Battle of Britain, and Free Falcon. Some free demo programs are included too. The game package, which has sha256sum

racing sims and MS flight simulator are non-violent, but lack story. Some classic games in these categories have detailed historical settings and a lot of complexity, allowing you to create your own adventure in an open world. The adventure is different every time you play. Some classic sims of this type are here: https://github.com/sim-museum/esports-for-engineers

Nobody's mentioning old commercial games that were later released by their publishers as open source. One example is the classic combat flight sim "Rowan's Battle of Britain", initially released in the year 2000. You can find it packaged to run under linux/wine, along with other free games, here:

https://github.com/sim-museum/esports-for-engineers

the source code is here:

More information here: https://github.com/sim-museum/esports-for-engineers/blob/master/esports-for-engineers-brochure.pdf

Classic racing and flight sims such as Grand Prix Legends, Mig Alley/Battle of Britain and Falcon 4 are available for linux here:

https://github.com/sim-museum/esports-for-engineers

(this is free, and does not use steam)

*The Monkey's Paw curls* https://github.com/TerryCavanagh/VVVVVV

VVVVVV at least has since become open source.

VVVVVV - A platformer where you flip gravity instead of jumping. Was recently open-sourced to celebrate the game's 10th anniversary!

Yeah, just look at this beauty! https://github.com/TerryCavanagh/VVVVVV/blob/master/desktop_version/src/Game.cpp

Finally, games are really that complex. Check out for example Terry Cavanagh's blog post on releasing the source code for VVVVVV, and check out the source for Game.cpp (although keep in mind this was ported from ActionScript).

So it seems to be an unofficial policy rather than a written rule, if those allegations are true (remember that those are Wolfire's claims of what Valve said). Certainly there doesn't seem to be consistent enforcement - for instance Tales of Maj'Eyal is free, but $7 on Steam. Apparently there are some minor differences - does that mean that they can claim that it's a "separate version" and hence doesn't need price parity, even though 99.9% of the game is identical? There's also VVVVVV, which is open source (albeit years after initial commercial release) where you can freely build the exact same copy as on Steam ($5), including steamworks support. Does that count as a "separate version" when you just have to compile code? Admittedly these are two indie games, albeit extremely well-known ones, but then - isn't Wolfire Games also an indie studio?

I think it's worth noting VVVVVV has actually been open-sourced https://github.com/TerryCavanagh/VVVVVV