Games

Flow. Don't interrupt me. The rest of this just is about it in various aspects.

Make it feel good to move from the get go. Don't make progression about getting rid of negative traits.

Combat as well. There's a trend of making the player halt their progress to handle an enemy in a certain way (e.g. gotta wait for the telegraphed shield drop) and that makes backtracking and exploration tedious. It can be challenging going through the first time, but don't interrupt me with the same thing over and over. Let me ignore the puzzle/timing element by being overpowered or at least let me bypass it with increased mobility.

I prefer bosses (and terrain) that can be overcome with skill or preparation. Like if you book it to them with minimal exploration they're hard but not impossible, but if you explore everywhere you can and find everything it should be easier. Don't artificially keep the player's abilities capped to make things more difficult. Also, no invincibility phases, please.

I dislike items that only provide access like key cards. Every item that opens up more map should be useful in some other way.

If there's a plot that is more complicated than can be explained in two sentences (Find the Metroid. Kill Dracula.), please make it good. Have non-cliche characters, plots that I can't immediately poke holes in, plot that isn't contained in logs that real people would never keep, and reasonable time frames for world changing events to occur. Those things all rip my suspension of disbelief to shreds. Don't make me sit through world building info dumps. Let me skip scenes and tutorials in case it's my second time through.