Super Mario Bros. Wonder And Sonic Superstars Devs Talk About Releasing Their Games The Same Week - Game Informer

Nintendo's Takashi Tezuka and Sonic Team's Takashi Iizuka share their sentiments ahead of a week where the two most popular platforming franchises have a new entry coming out.

Game's Mania

I'm excited for Super Mario Bros. Wonder and Sonic Superstars so I made a Smash screenshot to celebrate both! : r/Mario

Mario Wonder VERSUS Sonic Superstars: First Week Sales Numbers -- But Maybe You Should Buy BOTH!

Game Informer Issue 070 February 1999, PDF, Video Game Development Companies

Nintendo Producer Comments on Super Mario Bros. Wonder Launching the Same Week as Sonic Superstars

Sonic News Nintendo Life

Super Mario Wonder producer says game releasing same week as Sonic Superstars is “an interesting coincidence” - My Nintendo News

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Super Mario Bros. Wonder Exclusive Coverage - Game Informer

Super Mario Bros. Wonder And Sonic Superstars Devs Talk About Releasing Their Games The Same Week - Game Informer

Super Mario Bros. Wonder And Sonic Superstars Devs Talk About Releasing Their Games The Same Week - Game Informer

Super Mario Bros. Wonder - Review Thread *wowie zowie*, Page 14

Sonic Superstars Going Head-To-Head WIth Super Mario Wonder, Frontiers Receiving Update - News - Nintendo World Report

Poll: Which is the Best Super Mario Game?