Singaporean Bridge - It’s basically a crossover of Bridge and Werewolf / Polar Bear / Among Us. That small change of not knowing who your partner is from the start makes for games that are way more fun.
Pokemon Soulsilver - I love the following mechanic. The other features of the game are really great too.
Raze 2 - I have seen others describe it as the “Halo of flash games”. Personally, I had a blast playing it. Also, Waterflame’s soundtracks are the GOAT.