Good Multiplayer Dreamcast games?

I recently got a Dreamcasr, but I am missing some good multiplayer games for it.

What are some good, competitive or party like multiplayer games on the Dreamcast?

worms world party,powerstone 1/2,marvel vs capcom 1/2,capcom vs snk 1/2,crazy taxi 1/2,fatal fury mark of the wolves,samba de amigo, quake 3 arena,soul calibur,unreal tournament,virtua fighter 3tb,looney tunes space race,wacky races,

You can also check out Ooga Booga. It's a weird game, but fantastic if you play it with multiple people.Yagr_Zero

I already have crazy taxi and chu chu rocket. I would get Marvel Vs Capcom 2 and Powerstone 2 but they arent really in my budget right now. I think I might go for Ooga Booga or Giga Wing though

Power Stone is a no-brainer, but Soul Calibur has a neat 1v1 mode.