Hi, gamedev here. At one point on stage, you brought up the possibility of open sourcing your code, and Paul cautioned you that you may want to follow game industry conventions. There are two reasons the game industry tends to keep their code closed-source. 1) It has been lucrative for game studios to sell licenses to their closed-source engine. Some game studios, such as Id Software, have made hundreds of millions o…
They didn't make that much, far from that. Id Software has been sold to zenimax with all its assets including their IPs and their people for only (edit: and around) 1 hundred million dollar - because they were runnning out of cash.
My advice to the codecombat devs is at the opposite of pg's one: don't talk to the game industry. Most of all those said big players of the game industry aren't at all. They are actually bad software companies with poor revenues. Ubisoft for example never made more than a dozen percents a year or similar - I mean they never made 300%. You could be worth more than Id Software and even Ubisoft "easily" following the valley advices instead of the game industry ones. Really it's a myth the game industry is making well. At least, nothing comparable to the web startups. Only a very very few of them actually does like Valve, Riot and Blizzard.
Edit - a source about Id Software acquisition: http://www.sec.gov/Archives/edgar/data/1092835/0001092835090...