-that often. I think I did one True Pacifist run on the Switch back in, I dunno, 2018 or 2019, and I've gotten to the checkpoint before the Muffet boss fight on Steam, but I kinda lost interest in straight-up playing the game after that, and I haven't touched it in nearly two whole months. Nonetheless, I freaking love this game, its story, and its characters, even if I don't play the game itself all that much.
The game I'm currently playing alot is Dwarf Fortress; I put about 5 whole hours into it yesterday, bumping my overall playtime up to 32.1. It's kinda weird how I have a much bigger playtime of this game on Steam compared to Undertale, which is only 17 hours.
And yet, despite how addicting that D.F. is compared to Undertale, I'd argue that the latter has been more influential for me than the former, if only because I've known it for much longer. This isn't to put down D.F., of course! I'm loving that game a ton, there's this whole problem-solving aspect that tingles my brain in a very neat way, it's just that I feel like Undertale has had the larger impact on me.
So, uhhhh, in short, it's hard to say what your favorite video game is, due to there being many things you can like about a game, from the gameplay itself, to the story, to the characters, to even just the aesthetics and imagery, and you're bound to favor one game's implementation of some of these things over another, even if you love both.