1. Controls
2. Level design
3. Difficulty
4. Graphics
5. Characters
6. Replayability
7. Music
8. Dialogue
9. Storyline
10. Artwork
I feel like "fun factor" should be included, as a game could totally do great in almost every aspect but still just not feel fun. But I dunno, might be too vague a concept for some people, and there are probly some who would just say controls + level design = fun factor.
Also, this list is kinda hard, cuz like not all games are the same : p Video games are super diverse, like in a plain ol shoot em up game most people arent worried about story line, theyre probly just worried about how it controls and junk. While someone playing a big and pretty jrpg probly wants a good story and fun characters they can get behind.
This list is hard for me cuz like, I enjoy many different games, and this list would be different for whatever game im playing at the time : p Ill try to sum up my feelings in one list, but it could totally change depending on what game im playing, haha.
1. Controls. If a game can't control well its unplayable. Could be less important if the game isnt focused on controls as much as a story of some sort, like telltale games.
2 Music. This is a totally subjective thing of course, what one person considers good music, another may not. But have you ever played a game with NO music? It can really take away from the experience. I have once played a game that lacked music in certain places, which actually made the experience better, though.
3 Story line. While there are games where its not as important, I feel a good story can make a good game great. I mean I took the time to learn baten kaitos card based battle system just to see the story. Even games that lack a real story, Ill often make one up myself while I play a game just to give myself a reason to keep going and make the game more personal for me.
Storyline in games can be underrated
4 Characters, you cant have a good story without good characters. Even in games where story is less important, people STILL want good characters. Just look at all those 90s platformer mascots : p
5 Difficulty. I'm totally not one of those people who cry about "video games today being too easy", I don't look at video games as a challenge to overcome and defeated. I have enough challenges to overcome irl, games are my ESCAPE from irl : p
But, if a game is TOO easy, it can totally ruin (star fox adventures). I like a good medium difficulty, enough to get the brain going while playing, but not so much that it causes stress and takes me out of playing. Imagine if reading a book or watching tv did this, I dont know what kind of person wants to be stressed out on their off time : p
6 Dialog. While there are a ton of games where dialog isnt even IN the game, I still think its important. A huge part of ttyd to me is the dialog, like I LOVE the ridiculous stuff the characters in that game go on about. The crime solving penguin on the train portion of the game is one of my favorite parts of the game : p A game doesn't have to have dialog, but if it does, it can really make a game special.
7 Level Design. Depending on the game, this may or may not be important. If im playing skyrim, while the overworld may be important to me, im not gonna be as concerned about something like level design. Someone could make the argument that a dungeon heavy game like zelda needs good level design, and while I appreciate a good dungeon, ive also had a ton of fun with simple randomly generated dungeon games like Shiren the Wanderer. I apreciate well designed levels, but they arent the most important thing in a game if the factors above are done well, imo. Id rather play a game with a great story and cast like Shiren the Wanderer than a game with fun levels but bad music, bad controls, no relatable characters or story to get behind, and zero dialog ANY day ever : p
8 Artwork. I dunno if artwork means like case cover art, or in game art. And doing this list I suddenly feel I should have placed this higher, now. Haha. But I love the artwork of a game. I dont think it can necessarily make or break a game, but good artwork can make a game special.
9 Replayability. I hear people bring this one up alot. I think replayability can be totally cool, and in some games its important. Like, I sometimes play daytona usa for dreamcast. Arcade racing is pretty much the entirety of the game, so it has to be enjoyable enough to keep playing after the first few races, sure. BUT, ive never really had a game where I played it one time, and then never felt the desire to try it again. I dunno, I feel most games, if good, are replayable, so I don't really think too much on whether or not a game is "replayable" : p
10. Graphics. If I can see and make out and understand everything im looking at, then the developers did a good job with the graphics : p Honestly I feel like we could have stopped making consoles at the gamecube era and we would be just fine, haha. I even enjoy most original playstation games just fine, unbothered by the old graphics. Dunno why people STILL care about this these days : p