They're 4X turn-based strategy games--sci-fi and fantasy respectively. I picked up both of them in a bundle worth like £70 for £20.
I've played about 9 hours of Legend so far, although I haven't gotten too deep into it because I've been trying out all the different factions, and got absolutely battered in my longest game for misunderstanding and underestimating one of my neighbours. That said, it's a really good game; like Civ V but better looking and with consequential differences between the factions. Combat isn't all that good, but the focus is on city and resource management.
Haven't touched Endless Space, yet, but if Legend is anything to go by it should be good.