https://www.theregister.co.uk/2019/04/15/openai_retires_dota2/ > OpenAI’s video game playing bots OpenAI Five thrashed team OG, the reigning human champions of Dota 2, on Saturday in matches live streamed from San Francisco. > The non-profit recently turned for-profit research hub has been honing OpenAI Five’s skills for Dota 2, an online strategy game, for a while now. In fact, the virtual team have collectively played a whopping 45,000 years of Dota, Greg Brockman, chairman and CTO of OpenAI, said on stage.