Dota 2 was a (almost carbon) copy of a DotA map for Warcraft III (there was even a settlement between Blizzard and Valve about this). Not that it's necessarily

Dota 2 was a (almost carbon) copy of a DotA map for Warcraft III (there was even a settlement between Blizzard and Valve about this). Not that it's necessarily a bad thing, but it makes more sense to claim that LoL was inspired by a DotA map.