Half-life mods are the only joy in my life 🚬
I finished THE TRAP yesterday, it's a goofy Russian puzzle mod (there is an English dub version which I played), quite long at least for my low IQ brain (took me like 8 or 10 hours to finish) but VERY fun to solve. The puzzles have all gotten a lot of polish, and the mod is silly in an all around excellent way.

Today I played Vertigo Mod. it's a sort of recreation/backport of the cut vertigo chapter from Half-life 2 into Half-life 1. A bit of a shortie, only 2-3 hours, but fun. Added a few of the cut weapons and the maps are nice popcorn.

A bit further back I played Get a Life, a completely forgotten hl2 mod with total 2000s schlock and absolute autism, it makes 0 sense, things just happen, you go around the whole world, they added bleeding mechanics and bullet time to a hitscan shooter... It's genuinely AMAZING.

(and if that sounds interesting to you, you might also like Coastline to Atmosphere and Strider Mountain, which are also 2 old insane hl2 mods, although they don't have gameplay changes like Get a Life does)