Ayyy ToME oldhead gang represent. Been playing since about 2014 myself.

The modding community is what really kept breathing life into that game for me for so long. I'm hoping once we finally see the next (final?) DLC expansion that the modders will pick the game back up again. It's been very stagnant for a couple of years now, presumably waiting for DG to release his expansion like a sudden kraken as is tradition. But it's been 2 years now since the last update (which was primarily a scaffolding update for the Lost Lands content to come) and I imagine everyone who would be otherwise interested is now hanging in a limbo of not wanting to start work on a project when DG might drop a major update at literally any time and invalidate a bunch of your work.

Even just the regular base game kept me playing for years and years though. Solid 10/10 freeware game. I used to bounce between ToME and DCSS (also freeware, also recommend, this one actually gets regular updates) pretty regularly and that kept me covered on dungeon crawling roguelikes for the better part of a decade. I still keep coming back to them on occasion though, I've played a bit of both of those games within the last 2 weeks.