Terraria. At first I compared it to Minecraft before I started to like it on it's own. Thanks to pre-Fandom wiki I broke through not getting it's gameplay at all to enjoying it.
This one for me. The controls were hard to get used to and I died a whole lot and lost my stuff the first dozen nights. But once it clicked it got better and better, and holy cow the game has a lot going on inside of it.
Same for me. But then a friend played like an hour together with me, showed me the ropes and I haven't stopped playing since. Not all the time, but like one playthrough a month or so.