There have been many games in the Dude! series.
Dude Year 0
Dude Where's My Jewel of Judgement
Corwin and Random Go To White Castle
Dude Who's My Student Council President
Dude Road Trip
The Pattern Score
The Dudesical A Dude Wheres My Jewel of Judgement Musical
Randy and GMan's Excellent Adventure
And
New this year: Fast Times At Chaos High