The 6.90 AI maps often feature:
The 6.90 AI became a meme within the Dota community, with players sharing their most ridiculous encounters with the map's overzealous AI. While it was undoubtedly frustrating at times, the 6.90 AI also added a layer of challenge and excitement to the game.
Since these maps use the original Warcraft III engine, many players use third-party tools like AutoHotkey to remap inventory keys (traditionally bound to the Numpad) to more accessible keys.
Most modern Dota 1 maps require Warcraft III Patch 1.26a, 1.27, or 1.30+ . The 6.90 versions often rely on the Map Size Limit being bypassed, which is standard in later Blizzard patches.