Black Ops Entertainment's (Treasures of the Deep guys)
Agile Warrior: F-111X. Not a great flight combat sim but it features 2-players cooperative play, one player being the gunner and other the pilot (ala Star Fox Zero).
Vivid Image's
Street Racer. A Mario Kart Clone. Saturn and Playstation versions were the only 8-players split-screen games ever developed until the Virtua Racing remaster for Switch. And every single version of the game uses a different technical approach. The Genesis version was a regular raster-effect road game (ala OutRun). The Super Nintendo version was a Mode 7 game. The Saturn version was a more advance Mode 7 game. And the Playstation version featured a fully polygonal road. This version probably has the shortest rendering distance i've ever seen on Playstation, playing the 8-players split-screen (even shorter than Driver 2).
It has an unofficial translation but, afaik, it is not 100% stable.
The Spanish translation is perfectly playable. I already finished it three times and yes, it is an amazing game.