I haven't played either one in over four years since I sold my video game consoles and PCs in 2019, but last I checked No Man's Sky was severely lacking in content compared to Ark Survival Evolved. The problem I had with Ark was that it was incredibly glitchy and kept crashing. If it hadn't been for all the glitchiness; I'd have been relatively fine with mind-numbing, menial grinding for hours on end just to see new biomes and other players' bases and creatures every once in awhile. With No Man's Sky--you visit 50 planets; you've seen them all.