This is not because of the name, but because you are kind of duplicating the same game again (i assume you made the 2 games after each other).
If you don’t add variety to you games it will result in lower scores I believe. The only thing the title can influence is the message of the reviewer if you don’t change it from ‘Game #X’, to something else. But not the score ^^
I did another game before the one with the same stuff as ButKiller so it wouldn’t go: “The game came out to soon after the other one and is more or less the same setting as the previous game”
The first one ButKiller, The one before Farpie, Biscut (Biscut is different from the two and instead is on a different console) then FarPie (the one with the same things as ButKiller)
When you get 9s and 10s, the reviewers expect you to do better if you want the same (or a better) score for your next game. You’re basically challenging your own score. If you make another similar game and generate more design/tech points than last time, you will probably see better reviews.
The only thing the game name will do for you is if you leave it as the default “Game # X” the reviews will probably mention it. However it doesn’t seem to impact the scores. I’ve gotten perfect 10s off of a generic game name.
Sequels can be dangerous. If you make one and back it up with too many performance gains from new engine parts and/or skill gains from your employees you might one heck of a smash hit on your hands now, but you may have catapulted your target score up way too high and as a result, will suffer and struggle to overcome it. You might also suffer a penalty if you make the sequel improperly (too soon and/or without an updated engine).