What engine is used for Heroes & Generals? Sarah February 23, 2022 21:25 We have developed our own engine. We call it…(drum-roll)…. Retox! Related articles Will there be a built-in voice chat and/or chat-commands? What ports do I need to open in my NAT/firewall? What does Heroes & Generals cost? Migrating to Steam Store and Epic Games Store The issue I’m experiencing is not listed here.