Heyyo,
Oh! for dialup? best game for it is Worms Armageddon. NEVER did I lag, and everyone could hear my custom sound packs and gravestones. Lol, I was a n00b back then, so my custom worms soundpack was the rock, (ROODY-POO! CANDY ASS!! ROFL! oh gg) and my gravestone was Generation X. I had worm names like Bhrama Bull, Candyass, Rock, Sock (rock n' sock connection! lol), peoples eye, peoples elbow.. and a couple other rock-related names.
So yes! if worms armageddon's wormnet's still going pick up this classic, or worms world party should be good too.
Btw, I tried worms 3D... I dunno, just not the same, especially goes for the ninja rope, lol, you could like, glitch out the physics onnit and launch yourself across the level in 2 seconds. pwnage.